Chris Mason | 6cbd557 | 2007-06-12 09:07:21 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 Oracle. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public |
| 6 | * License v2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public |
| 14 | * License along with this program; if not, write to the |
| 15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 16 | * Boston, MA 021110-1307, USA. |
| 17 | */ |
| 18 | |
Chris Mason | dc17ff8 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 19 | #ifndef __BTRFS_CTREE__ |
| 20 | #define __BTRFS_CTREE__ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 21 | |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 22 | #include <linux/mm.h> |
| 23 | #include <linux/highmem.h> |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 24 | #include <linux/fs.h> |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 25 | #include <linux/rwsem.h> |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 26 | #include <linux/semaphore.h> |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 27 | #include <linux/completion.h> |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 28 | #include <linux/backing-dev.h> |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 29 | #include <linux/wait.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Stefan Schmidt | f8b1808 | 2011-01-12 10:30:42 +0100 | [diff] [blame] | 31 | #include <linux/kobject.h> |
liubo | 1abe9b8 | 2011-03-24 11:18:59 +0000 | [diff] [blame] | 32 | #include <trace/events/btrfs.h> |
Chris Mason | 479965d | 2007-10-15 16:14:27 -0400 | [diff] [blame] | 33 | #include <asm/kmap_types.h> |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 34 | #include <linux/pagemap.h> |
Filipe Brandenburger | 55e301f | 2013-01-29 06:04:50 +0000 | [diff] [blame] | 35 | #include <linux/btrfs.h> |
Jeff Mahoney | db67116 | 2016-04-01 16:14:29 -0400 | [diff] [blame] | 36 | #include <linux/btrfs_tree.h> |
Miao Xie | 21c7e75 | 2014-05-13 17:29:04 -0700 | [diff] [blame] | 37 | #include <linux/workqueue.h> |
Qu Wenruo | f667aef | 2014-09-23 13:40:08 +0800 | [diff] [blame] | 38 | #include <linux/security.h> |
Byongho Lee | ee22184 | 2015-12-15 01:42:10 +0900 | [diff] [blame] | 39 | #include <linux/sizes.h> |
Jeff Mahoney | 897a41b | 2016-08-31 23:55:33 -0400 | [diff] [blame] | 40 | #include <linux/dynamic_debug.h> |
Chris Mason | d1310b2 | 2008-01-24 16:13:08 -0500 | [diff] [blame] | 41 | #include "extent_io.h" |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 42 | #include "extent_map.h" |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 43 | #include "async-thread.h" |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 44 | |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 45 | struct btrfs_trans_handle; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 46 | struct btrfs_transaction; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 47 | struct btrfs_pending_snapshot; |
Chris Mason | 35b7e47 | 2007-05-02 15:53:43 -0400 | [diff] [blame] | 48 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
| 49 | extern struct kmem_cache *btrfs_transaction_cachep; |
| 50 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 51 | extern struct kmem_cache *btrfs_path_cachep; |
Josef Bacik | dc89e98 | 2011-01-28 17:05:48 -0500 | [diff] [blame] | 52 | extern struct kmem_cache *btrfs_free_space_cachep; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 53 | struct btrfs_ordered_sum; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 54 | |
Josef Bacik | 294e30f | 2013-10-09 12:00:56 -0400 | [diff] [blame] | 55 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 56 | #define STATIC noinline |
| 57 | #else |
| 58 | #define STATIC static noinline |
| 59 | #endif |
| 60 | |
Zach Brown | cdb4c57 | 2013-02-20 00:55:13 +0000 | [diff] [blame] | 61 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 62 | |
Stefan Behrens | 72d7aef | 2012-11-06 14:57:46 +0100 | [diff] [blame] | 63 | #define BTRFS_MAX_MIRRORS 3 |
Stefan Behrens | 94598ba | 2012-03-27 14:21:26 -0400 | [diff] [blame] | 64 | |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 65 | #define BTRFS_MAX_LEVEL 8 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 66 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 67 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
| 68 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 69 | /* |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 70 | * the max metadata block size. This limit is somewhat artificial, |
| 71 | * but the memmove costs go through the roof for larger blocks. |
| 72 | */ |
| 73 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 |
| 74 | |
| 75 | /* |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 76 | * we can actually store much bigger names, but lets not confuse the rest |
| 77 | * of linux |
| 78 | */ |
| 79 | #define BTRFS_NAME_LEN 255 |
| 80 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 81 | /* |
| 82 | * Theoretical limit is larger, but we keep this down to a sane |
| 83 | * value. That should limit greatly the possibility of collisions on |
| 84 | * inode ref items. |
| 85 | */ |
| 86 | #define BTRFS_LINK_MAX 65535U |
| 87 | |
David Sterba | 4d4ab6d | 2015-11-19 11:42:31 +0100 | [diff] [blame] | 88 | static const int btrfs_csum_sizes[] = { 4 }; |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 89 | |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 90 | /* four bytes for CRC32 */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 91 | #define BTRFS_EMPTY_DIR_SIZE 0 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 92 | |
Stefan Behrens | 3d136a1 | 2012-02-03 11:20:04 +0100 | [diff] [blame] | 93 | /* ioprio of readahead is set to idle */ |
| 94 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) |
| 95 | |
Byongho Lee | ee22184 | 2015-12-15 01:42:10 +0900 | [diff] [blame] | 96 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 97 | |
Byongho Lee | ee22184 | 2015-12-15 01:42:10 +0900 | [diff] [blame] | 98 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
Josef Bacik | dcab6a3 | 2015-02-11 15:08:59 -0500 | [diff] [blame] | 99 | |
David Sterba | 823bb20 | 2017-01-04 11:09:51 +0100 | [diff] [blame] | 100 | /* |
| 101 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size |
| 102 | */ |
| 103 | static inline u32 count_max_extents(u64 size) |
| 104 | { |
| 105 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); |
| 106 | } |
| 107 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 108 | struct btrfs_mapping_tree { |
| 109 | struct extent_map_tree map_tree; |
| 110 | }; |
| 111 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 112 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
| 113 | { |
| 114 | BUG_ON(num_stripes == 0); |
| 115 | return sizeof(struct btrfs_chunk) + |
| 116 | sizeof(struct btrfs_stripe) * (num_stripes - 1); |
| 117 | } |
| 118 | |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 119 | /* |
| 120 | * File system states |
| 121 | */ |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 122 | #define BTRFS_FS_STATE_ERROR 0 |
Miao Xie | dc81cdc | 2013-02-20 23:32:52 -0700 | [diff] [blame] | 123 | #define BTRFS_FS_STATE_REMOUNTING 1 |
David Sterba | 0874881 | 2013-03-12 14:46:08 +0000 | [diff] [blame] | 124 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 125 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
Jeff Mahoney | 7c0260e | 2016-06-20 14:14:09 -0400 | [diff] [blame] | 126 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 127 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 128 | #define BTRFS_BACKREF_REV_MAX 256 |
| 129 | #define BTRFS_BACKREF_REV_SHIFT 56 |
| 130 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ |
| 131 | BTRFS_BACKREF_REV_SHIFT) |
| 132 | |
| 133 | #define BTRFS_OLD_BACKREF_REV 0 |
| 134 | #define BTRFS_MIXED_BACKREF_REV 1 |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 135 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 136 | /* |
| 137 | * every tree block (leaf or node) starts with this header. |
| 138 | */ |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 139 | struct btrfs_header { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 140 | /* these first four must match the super block */ |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 141 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 142 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 143 | __le64 bytenr; /* which block this node is supposed to live in */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 144 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 145 | |
| 146 | /* allowed to be different from the super from here on down */ |
| 147 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 148 | __le64 generation; |
Chris Mason | 4d77567 | 2007-04-20 20:23:12 -0400 | [diff] [blame] | 149 | __le64 owner; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 150 | __le32 nritems; |
Chris Mason | 9a6f11e | 2007-03-27 09:06:38 -0400 | [diff] [blame] | 151 | u8 level; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 152 | } __attribute__ ((__packed__)); |
| 153 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 154 | /* |
| 155 | * this is a very generous portion of the super block, giving us |
| 156 | * room to translate 14 chunks with 3 stripes each. |
| 157 | */ |
| 158 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 |
| 159 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 160 | /* |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 161 | * just in case we somehow lose the roots and are not able to mount, |
| 162 | * we store an array of the roots from previous transactions |
| 163 | * in the super. |
| 164 | */ |
| 165 | #define BTRFS_NUM_BACKUP_ROOTS 4 |
| 166 | struct btrfs_root_backup { |
| 167 | __le64 tree_root; |
| 168 | __le64 tree_root_gen; |
| 169 | |
| 170 | __le64 chunk_root; |
| 171 | __le64 chunk_root_gen; |
| 172 | |
| 173 | __le64 extent_root; |
| 174 | __le64 extent_root_gen; |
| 175 | |
| 176 | __le64 fs_root; |
| 177 | __le64 fs_root_gen; |
| 178 | |
| 179 | __le64 dev_root; |
| 180 | __le64 dev_root_gen; |
| 181 | |
| 182 | __le64 csum_root; |
| 183 | __le64 csum_root_gen; |
| 184 | |
| 185 | __le64 total_bytes; |
| 186 | __le64 bytes_used; |
| 187 | __le64 num_devices; |
| 188 | /* future */ |
Masanari Iida | d142324 | 2012-10-31 15:16:32 +0000 | [diff] [blame] | 189 | __le64 unused_64[4]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 190 | |
| 191 | u8 tree_root_level; |
| 192 | u8 chunk_root_level; |
| 193 | u8 extent_root_level; |
| 194 | u8 fs_root_level; |
| 195 | u8 dev_root_level; |
| 196 | u8 csum_root_level; |
| 197 | /* future and to align */ |
| 198 | u8 unused_8[10]; |
| 199 | } __attribute__ ((__packed__)); |
| 200 | |
| 201 | /* |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 202 | * the super block basically lists the main trees of the FS |
| 203 | * it currently lacks any block count etc etc |
| 204 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 205 | struct btrfs_super_block { |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 206 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 207 | /* the first 4 fields must match struct btrfs_header */ |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 208 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 209 | __le64 bytenr; /* this block number */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 210 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 211 | |
| 212 | /* allowed to be different from the btrfs_header from here own down */ |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 213 | __le64 magic; |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 214 | __le64 generation; |
| 215 | __le64 root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 216 | __le64 chunk_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 217 | __le64 log_root; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 218 | |
| 219 | /* this will help find the new super based on the log root */ |
| 220 | __le64 log_root_transid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 221 | __le64 total_bytes; |
| 222 | __le64 bytes_used; |
Chris Mason | 2e635a2 | 2007-03-21 11:12:56 -0400 | [diff] [blame] | 223 | __le64 root_dir_objectid; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 224 | __le64 num_devices; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 225 | __le32 sectorsize; |
| 226 | __le32 nodesize; |
David Sterba | 707e8a0 | 2014-06-04 19:22:26 +0200 | [diff] [blame] | 227 | __le32 __unused_leafsize; |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 228 | __le32 stripesize; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 229 | __le32 sys_chunk_array_size; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 230 | __le64 chunk_root_generation; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 231 | __le64 compat_flags; |
| 232 | __le64 compat_ro_flags; |
| 233 | __le64 incompat_flags; |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 234 | __le16 csum_type; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 235 | u8 root_level; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 236 | u8 chunk_root_level; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 237 | u8 log_root_level; |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 238 | struct btrfs_dev_item dev_item; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 239 | |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 240 | char label[BTRFS_LABEL_SIZE]; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 241 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 242 | __le64 cache_generation; |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 243 | __le64 uuid_tree_generation; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 244 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 245 | /* future expansion */ |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 246 | __le64 reserved[30]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 247 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 248 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
Chris Mason | cfaa729 | 2007-02-21 17:04:57 -0500 | [diff] [blame] | 249 | } __attribute__ ((__packed__)); |
| 250 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 251 | /* |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 252 | * Compat flags that we support. If any incompat flags are set other than the |
| 253 | * ones specified below then we will fail to mount |
| 254 | */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 255 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 256 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
| 257 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL |
Omar Sandoval | 70f6d82 | 2015-09-29 20:50:38 -0700 | [diff] [blame] | 258 | |
| 259 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ |
Omar Sandoval | 6675df3 | 2016-09-22 17:24:22 -0700 | [diff] [blame] | 260 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
| 261 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) |
Omar Sandoval | 70f6d82 | 2015-09-29 20:50:38 -0700 | [diff] [blame] | 262 | |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 263 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
| 264 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL |
| 265 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 266 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
| 267 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 268 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 269 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 270 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 271 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 272 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 273 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 274 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
| 275 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 276 | |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 277 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
| 278 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) |
| 279 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 280 | |
| 281 | /* |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 282 | * A leaf is full of items. offset and size tell us where to find |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 283 | * the item in the leaf (relative to the start of the data area) |
| 284 | */ |
Chris Mason | 0783fcf | 2007-03-12 20:12:07 -0400 | [diff] [blame] | 285 | struct btrfs_item { |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 286 | struct btrfs_disk_key key; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 287 | __le32 offset; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 288 | __le32 size; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 289 | } __attribute__ ((__packed__)); |
| 290 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 291 | /* |
| 292 | * leaves have an item area and a data area: |
| 293 | * [item0, item1....itemN] [free space] [dataN...data1, data0] |
| 294 | * |
| 295 | * The data is separate from the items to get the keys closer together |
| 296 | * during searches. |
| 297 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 298 | struct btrfs_leaf { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 299 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 300 | struct btrfs_item items[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 301 | } __attribute__ ((__packed__)); |
| 302 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 303 | /* |
| 304 | * all non-leaf blocks are nodes, they hold only keys and pointers to |
| 305 | * other blocks |
| 306 | */ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 307 | struct btrfs_key_ptr { |
| 308 | struct btrfs_disk_key key; |
| 309 | __le64 blockptr; |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 310 | __le64 generation; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 311 | } __attribute__ ((__packed__)); |
| 312 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 313 | struct btrfs_node { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 314 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 315 | struct btrfs_key_ptr ptrs[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 316 | } __attribute__ ((__packed__)); |
| 317 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 318 | /* |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 319 | * btrfs_paths remember the path taken from the root down to the leaf. |
| 320 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 321 | * to any other levels that are present. |
| 322 | * |
| 323 | * The slots array records the index of the item or block pointer |
| 324 | * used while walking the tree. |
| 325 | */ |
David Sterba | e4058b5 | 2015-11-27 16:31:35 +0100 | [diff] [blame] | 326 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 327 | struct btrfs_path { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 328 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 329 | int slots[BTRFS_MAX_LEVEL]; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 330 | /* if there is real range locking, this locks field will change */ |
David Sterba | 4fb72bf | 2015-11-27 16:31:45 +0100 | [diff] [blame] | 331 | u8 locks[BTRFS_MAX_LEVEL]; |
David Sterba | dccabfa | 2015-11-27 16:31:38 +0100 | [diff] [blame] | 332 | u8 reada; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 333 | /* keep some upper locks as we walk down */ |
David Sterba | 7853f15 | 2015-11-27 16:31:42 +0100 | [diff] [blame] | 334 | u8 lowest_level; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 335 | |
| 336 | /* |
| 337 | * set by btrfs_split_item, tells search_slot to keep all locks |
| 338 | * and to force calls to keep space in the nodes |
| 339 | */ |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 340 | unsigned int search_for_split:1; |
| 341 | unsigned int keep_locks:1; |
| 342 | unsigned int skip_locking:1; |
| 343 | unsigned int leave_spinning:1; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 344 | unsigned int search_commit_root:1; |
Josef Bacik | 3f8a18c | 2014-03-28 17:16:01 -0400 | [diff] [blame] | 345 | unsigned int need_commit_sem:1; |
Filipe Manana | 5f5bc6b | 2014-11-09 08:38:39 +0000 | [diff] [blame] | 346 | unsigned int skip_release_on_error:1; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 347 | }; |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 348 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 349 | sizeof(struct btrfs_item)) |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 350 | struct btrfs_dev_replace { |
| 351 | u64 replace_state; /* see #define above */ |
| 352 | u64 time_started; /* seconds since 1-Jan-1970 */ |
| 353 | u64 time_stopped; /* seconds since 1-Jan-1970 */ |
| 354 | atomic64_t num_write_errors; |
| 355 | atomic64_t num_uncorrectable_read_errors; |
| 356 | |
| 357 | u64 cursor_left; |
| 358 | u64 committed_cursor_left; |
| 359 | u64 cursor_left_last_write_of_item; |
| 360 | u64 cursor_right; |
| 361 | |
| 362 | u64 cont_reading_from_srcdev_mode; /* see #define above */ |
| 363 | |
| 364 | int is_valid; |
| 365 | int item_needs_writeback; |
| 366 | struct btrfs_device *srcdev; |
| 367 | struct btrfs_device *tgtdev; |
| 368 | |
| 369 | pid_t lock_owner; |
| 370 | atomic_t nesting_level; |
| 371 | struct mutex lock_finishing_cancel_unmount; |
Liu Bo | 73beece | 2015-07-17 16:49:19 +0800 | [diff] [blame] | 372 | rwlock_t lock; |
| 373 | atomic_t read_locks; |
| 374 | atomic_t blocking_readers; |
| 375 | wait_queue_head_t read_lock_wq; |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 376 | |
| 377 | struct btrfs_scrub_progress scrub_progress; |
| 378 | }; |
| 379 | |
Jeff Mahoney | c189544 | 2014-05-27 12:59:57 -0400 | [diff] [blame] | 380 | /* For raid type sysfs entries */ |
| 381 | struct raid_kobject { |
| 382 | int raid_type; |
| 383 | struct kobject kobj; |
| 384 | }; |
| 385 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 386 | struct btrfs_space_info { |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 387 | spinlock_t lock; |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 388 | |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 389 | u64 total_bytes; /* total bytes in the space, |
| 390 | this doesn't take mirrors into account */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 391 | u64 bytes_used; /* total bytes used, |
Lucas De Marchi | e9c5499 | 2011-04-26 23:28:26 -0700 | [diff] [blame] | 392 | this doesn't take mirrors into account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 393 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
| 394 | transaction finishes */ |
| 395 | u64 bytes_reserved; /* total bytes the allocator has reserved for |
| 396 | current allocations */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 397 | u64 bytes_may_use; /* number of bytes that may be used for |
Josef Bacik | 9ed74f2 | 2009-09-11 16:12:44 -0400 | [diff] [blame] | 398 | delalloc/allocations */ |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 399 | u64 bytes_readonly; /* total bytes that are read only */ |
| 400 | |
Josef Bacik | 4f4db21 | 2015-09-29 11:40:47 -0400 | [diff] [blame] | 401 | u64 max_extent_size; /* This will hold the maximum extent size of |
| 402 | the space info if we had an ENOSPC in the |
| 403 | allocator. */ |
| 404 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 405 | unsigned int full:1; /* indicates that we cannot allocate any more |
| 406 | chunks for this space */ |
| 407 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
| 408 | |
| 409 | unsigned int flush:1; /* set if we are trying to make space */ |
| 410 | |
| 411 | unsigned int force_alloc; /* set if we need to force a chunk |
| 412 | alloc for this space */ |
| 413 | |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 414 | u64 disk_used; /* total bytes used on disk */ |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 415 | u64 disk_total; /* total bytes on disk, takes mirrors into |
| 416 | account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 417 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 418 | u64 flags; |
| 419 | |
Chris Mason | 36e39c4 | 2011-03-12 07:08:42 -0500 | [diff] [blame] | 420 | /* |
Josef Bacik | b150a4f | 2013-06-19 15:00:04 -0400 | [diff] [blame] | 421 | * bytes_pinned is kept in line with what is actually pinned, as in |
| 422 | * we've called update_block_group and dropped the bytes_used counter |
| 423 | * and increased the bytes_pinned counter. However this means that |
| 424 | * bytes_pinned does not reflect the bytes that will be pinned once the |
Adam Buchbinder | bb7ab3b | 2016-03-04 11:23:12 -0800 | [diff] [blame] | 425 | * delayed refs are flushed, so this counter is inc'ed every time we |
| 426 | * call btrfs_free_extent so it is a realtime count of what will be |
Nicholas D Steeves | 0132761 | 2016-05-19 21:18:45 -0400 | [diff] [blame] | 427 | * freed once the transaction is committed. It will be zeroed every |
Adam Buchbinder | bb7ab3b | 2016-03-04 11:23:12 -0800 | [diff] [blame] | 428 | * time the transaction commits. |
Josef Bacik | b150a4f | 2013-06-19 15:00:04 -0400 | [diff] [blame] | 429 | */ |
| 430 | struct percpu_counter total_bytes_pinned; |
| 431 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 432 | struct list_head list; |
Filipe Manana | 75c68e9 | 2015-01-16 13:24:40 +0000 | [diff] [blame] | 433 | /* Protected by the spinlock 'lock'. */ |
Josef Bacik | 633c0aa | 2014-10-31 09:49:34 -0400 | [diff] [blame] | 434 | struct list_head ro_bgs; |
Josef Bacik | 957780e | 2016-05-17 13:30:55 -0400 | [diff] [blame] | 435 | struct list_head priority_tickets; |
| 436 | struct list_head tickets; |
Wang Xiaoguang | 939659d | 2016-11-07 15:59:16 +0800 | [diff] [blame] | 437 | /* |
| 438 | * tickets_id just indicates the next ticket will be handled, so note |
| 439 | * it's not stored per ticket. |
| 440 | */ |
Wang Xiaoguang | ce12965 | 2016-09-02 10:58:46 +0800 | [diff] [blame] | 441 | u64 tickets_id; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 442 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 443 | struct rw_semaphore groups_sem; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 444 | /* for block groups in our same type */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 445 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | fdb5eff | 2011-06-07 16:07:44 -0400 | [diff] [blame] | 446 | wait_queue_head_t wait; |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 447 | |
| 448 | struct kobject kobj; |
Jeff Mahoney | c189544 | 2014-05-27 12:59:57 -0400 | [diff] [blame] | 449 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 450 | }; |
| 451 | |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 452 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
| 453 | #define BTRFS_BLOCK_RSV_DELALLOC 2 |
| 454 | #define BTRFS_BLOCK_RSV_TRANS 3 |
| 455 | #define BTRFS_BLOCK_RSV_CHUNK 4 |
| 456 | #define BTRFS_BLOCK_RSV_DELOPS 5 |
| 457 | #define BTRFS_BLOCK_RSV_EMPTY 6 |
| 458 | #define BTRFS_BLOCK_RSV_TEMP 7 |
| 459 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 460 | struct btrfs_block_rsv { |
| 461 | u64 size; |
| 462 | u64 reserved; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 463 | struct btrfs_space_info *space_info; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 464 | spinlock_t lock; |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 465 | unsigned short full; |
| 466 | unsigned short type; |
| 467 | unsigned short failfast; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 468 | }; |
| 469 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 470 | /* |
| 471 | * free clusters are used to claim free space in relatively large chunks, |
| 472 | * allowing us to do less seeky writes. They are used for all metadata |
| 473 | * allocations and data allocations in ssd mode. |
| 474 | */ |
| 475 | struct btrfs_free_cluster { |
| 476 | spinlock_t lock; |
| 477 | spinlock_t refill_lock; |
| 478 | struct rb_root root; |
| 479 | |
| 480 | /* largest extent in this cluster */ |
| 481 | u64 max_size; |
| 482 | |
| 483 | /* first extent starting offset */ |
| 484 | u64 window_start; |
| 485 | |
Josef Bacik | c759c4e | 2015-10-02 15:25:10 -0400 | [diff] [blame] | 486 | /* We did a full search and couldn't create a cluster */ |
| 487 | bool fragmented; |
| 488 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 489 | struct btrfs_block_group_cache *block_group; |
| 490 | /* |
| 491 | * when a cluster is allocated from a block group, we put the |
| 492 | * cluster onto a list in the block group so that it can |
| 493 | * be freed before the block group is freed. |
| 494 | */ |
| 495 | struct list_head block_group_list; |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 496 | }; |
| 497 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 498 | enum btrfs_caching_type { |
| 499 | BTRFS_CACHE_NO = 0, |
| 500 | BTRFS_CACHE_STARTED = 1, |
Josef Bacik | 291c7d2 | 2011-11-14 13:52:14 -0500 | [diff] [blame] | 501 | BTRFS_CACHE_FAST = 2, |
| 502 | BTRFS_CACHE_FINISHED = 3, |
Josef Bacik | 36cce92 | 2013-08-05 11:15:21 -0400 | [diff] [blame] | 503 | BTRFS_CACHE_ERROR = 4, |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 504 | }; |
| 505 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 506 | enum btrfs_disk_cache_state { |
| 507 | BTRFS_DC_WRITTEN = 0, |
| 508 | BTRFS_DC_ERROR = 1, |
| 509 | BTRFS_DC_CLEAR = 2, |
| 510 | BTRFS_DC_SETUP = 3, |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 511 | }; |
| 512 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 513 | struct btrfs_caching_control { |
| 514 | struct list_head list; |
| 515 | struct mutex mutex; |
| 516 | wait_queue_head_t wait; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 517 | struct btrfs_work work; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 518 | struct btrfs_block_group_cache *block_group; |
| 519 | u64 progress; |
| 520 | atomic_t count; |
| 521 | }; |
| 522 | |
Omar Sandoval | 73fa48b | 2015-09-29 20:50:33 -0700 | [diff] [blame] | 523 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
| 524 | #define CACHING_CTL_WAKE_UP (1024 * 1024 * 2) |
| 525 | |
Chris Mason | 4c6d1d8 | 2015-04-06 13:17:20 -0700 | [diff] [blame] | 526 | struct btrfs_io_ctl { |
| 527 | void *cur, *orig; |
| 528 | struct page *page; |
| 529 | struct page **pages; |
Jeff Mahoney | f15376d | 2016-06-22 18:56:18 -0400 | [diff] [blame] | 530 | struct btrfs_fs_info *fs_info; |
Chris Mason | c9dc4c6 | 2015-04-04 17:14:42 -0700 | [diff] [blame] | 531 | struct inode *inode; |
Chris Mason | 4c6d1d8 | 2015-04-06 13:17:20 -0700 | [diff] [blame] | 532 | unsigned long size; |
| 533 | int index; |
| 534 | int num_pages; |
Chris Mason | c9dc4c6 | 2015-04-04 17:14:42 -0700 | [diff] [blame] | 535 | int entries; |
| 536 | int bitmaps; |
Chris Mason | 4c6d1d8 | 2015-04-06 13:17:20 -0700 | [diff] [blame] | 537 | unsigned check_crcs:1; |
| 538 | }; |
| 539 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 540 | struct btrfs_block_group_cache { |
| 541 | struct btrfs_key key; |
| 542 | struct btrfs_block_group_item item; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 543 | struct btrfs_fs_info *fs_info; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 544 | struct inode *inode; |
Chris Mason | c286ac4 | 2008-07-22 23:06:41 -0400 | [diff] [blame] | 545 | spinlock_t lock; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 546 | u64 pinned; |
Zheng Yan | e856981 | 2008-09-26 10:05:48 -0400 | [diff] [blame] | 547 | u64 reserved; |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 548 | u64 delalloc_bytes; |
Josef Bacik | 1b2da37 | 2009-09-11 16:11:20 -0400 | [diff] [blame] | 549 | u64 bytes_super; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 550 | u64 flags; |
Josef Bacik | 5b0e95b | 2011-10-06 08:58:24 -0400 | [diff] [blame] | 551 | u64 cache_generation; |
Omar Sandoval | a5ed918 | 2015-09-29 20:50:35 -0700 | [diff] [blame] | 552 | u32 sectorsize; |
| 553 | |
| 554 | /* |
| 555 | * If the free space extent count exceeds this number, convert the block |
| 556 | * group to bitmaps. |
| 557 | */ |
| 558 | u32 bitmap_high_thresh; |
| 559 | |
| 560 | /* |
| 561 | * If the free space extent count drops below this number, convert the |
| 562 | * block group back to extents. |
| 563 | */ |
| 564 | u32 bitmap_low_thresh; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 565 | |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 566 | /* |
| 567 | * It is just used for the delayed data space allocation because |
| 568 | * only the data space allocation and the relative metadata update |
| 569 | * can be done cross the transaction. |
| 570 | */ |
| 571 | struct rw_semaphore data_rwsem; |
| 572 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 573 | /* for raid56, this is a full stripe, without parity */ |
| 574 | unsigned long full_stripe_len; |
| 575 | |
Zhaolei | 868f401 | 2015-08-05 16:43:27 +0800 | [diff] [blame] | 576 | unsigned int ro; |
Mariusz Kozlowski | 0410c94 | 2010-11-20 12:03:07 +0000 | [diff] [blame] | 577 | unsigned int iref:1; |
Filipe Manana | 4f69cb9 | 2014-11-26 15:28:51 +0000 | [diff] [blame] | 578 | unsigned int has_caching_ctl:1; |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 579 | unsigned int removed:1; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 580 | |
| 581 | int disk_cache_state; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 582 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 583 | /* cache tracking stuff */ |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 584 | int cached; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 585 | struct btrfs_caching_control *caching_ctl; |
| 586 | u64 last_byte_to_unpin; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 587 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 588 | struct btrfs_space_info *space_info; |
| 589 | |
| 590 | /* free space cache stuff */ |
Li Zefan | 34d52cb | 2011-03-29 13:46:06 +0800 | [diff] [blame] | 591 | struct btrfs_free_space_ctl *free_space_ctl; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 592 | |
| 593 | /* block group cache stuff */ |
| 594 | struct rb_node cache_node; |
| 595 | |
| 596 | /* for block groups in the same raid type */ |
| 597 | struct list_head list; |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 598 | |
| 599 | /* usage count */ |
| 600 | atomic_t count; |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 601 | |
| 602 | /* List of struct btrfs_free_clusters for this block group. |
| 603 | * Today it will only have one thing on it, but that may change |
| 604 | */ |
| 605 | struct list_head cluster_list; |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 606 | |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 607 | /* For delayed block group creation or deletion of empty block groups */ |
| 608 | struct list_head bg_list; |
Josef Bacik | 633c0aa | 2014-10-31 09:49:34 -0400 | [diff] [blame] | 609 | |
| 610 | /* For read-only block groups */ |
| 611 | struct list_head ro_list; |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 612 | |
| 613 | atomic_t trimming; |
Josef Bacik | ce93ec5 | 2014-11-17 15:45:48 -0500 | [diff] [blame] | 614 | |
| 615 | /* For dirty block groups */ |
| 616 | struct list_head dirty_list; |
Chris Mason | c9dc4c6 | 2015-04-04 17:14:42 -0700 | [diff] [blame] | 617 | struct list_head io_list; |
| 618 | |
| 619 | struct btrfs_io_ctl io_ctl; |
Omar Sandoval | a5ed918 | 2015-09-29 20:50:35 -0700 | [diff] [blame] | 620 | |
Filipe Manana | 9cfa3e3 | 2016-04-26 15:39:32 +0100 | [diff] [blame] | 621 | /* |
| 622 | * Incremented when doing extent allocations and holding a read lock |
| 623 | * on the space_info's groups_sem semaphore. |
| 624 | * Decremented when an ordered extent that represents an IO against this |
| 625 | * block group's range is created (after it's added to its inode's |
| 626 | * root's list of ordered extents) or immediately after the allocation |
| 627 | * if it's a metadata extent or fallocate extent (for these cases we |
| 628 | * don't create ordered extents). |
| 629 | */ |
| 630 | atomic_t reservations; |
| 631 | |
Filipe Manana | f78c436 | 2016-05-09 13:15:41 +0100 | [diff] [blame] | 632 | /* |
| 633 | * Incremented while holding the spinlock *lock* by a task checking if |
| 634 | * it can perform a nocow write (incremented if the value for the *ro* |
| 635 | * field is 0). Decremented by such tasks once they create an ordered |
| 636 | * extent or before that if some error happens before reaching that step. |
| 637 | * This is to prevent races between block group relocation and nocow |
| 638 | * writes through direct IO. |
| 639 | */ |
| 640 | atomic_t nocow_writers; |
| 641 | |
Omar Sandoval | a5ed918 | 2015-09-29 20:50:35 -0700 | [diff] [blame] | 642 | /* Lock for free space tree operations. */ |
| 643 | struct mutex free_space_lock; |
| 644 | |
| 645 | /* |
| 646 | * Does the block group need to be added to the free space tree? |
| 647 | * Protected by free_space_lock. |
| 648 | */ |
| 649 | int needs_free_space; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 650 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 651 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 652 | /* delayed seq elem */ |
| 653 | struct seq_list { |
| 654 | struct list_head list; |
| 655 | u64 seq; |
| 656 | }; |
| 657 | |
David Sterba | 3284da7 | 2015-02-25 15:47:32 +0100 | [diff] [blame] | 658 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
| 659 | |
Josef Bacik | 5d80366 | 2013-02-07 16:06:02 -0500 | [diff] [blame] | 660 | enum btrfs_orphan_cleanup_state { |
| 661 | ORPHAN_CLEANUP_STARTED = 1, |
| 662 | ORPHAN_CLEANUP_DONE = 2, |
| 663 | }; |
| 664 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 665 | /* used by the raid56 code to lock stripes for read/modify/write */ |
| 666 | struct btrfs_stripe_hash { |
| 667 | struct list_head hash_list; |
| 668 | wait_queue_head_t wait; |
| 669 | spinlock_t lock; |
| 670 | }; |
| 671 | |
| 672 | /* used by the raid56 code to lock stripes for read/modify/write */ |
| 673 | struct btrfs_stripe_hash_table { |
Chris Mason | 4ae10b3 | 2013-01-31 14:42:09 -0500 | [diff] [blame] | 674 | struct list_head stripe_cache; |
| 675 | spinlock_t cache_lock; |
| 676 | int cache_size; |
| 677 | struct btrfs_stripe_hash table[]; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 678 | }; |
| 679 | |
| 680 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 |
| 681 | |
Miao Xie | 21c7e75 | 2014-05-13 17:29:04 -0700 | [diff] [blame] | 682 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
| 683 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 684 | /* fs_info */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 685 | struct reloc_control; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 686 | struct btrfs_device; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 687 | struct btrfs_fs_devices; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 688 | struct btrfs_balance_control; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 689 | struct btrfs_delayed_root; |
Josef Bacik | afcdd12 | 2016-09-02 15:40:02 -0400 | [diff] [blame] | 690 | |
| 691 | #define BTRFS_FS_BARRIER 1 |
| 692 | #define BTRFS_FS_CLOSING_START 2 |
| 693 | #define BTRFS_FS_CLOSING_DONE 3 |
| 694 | #define BTRFS_FS_LOG_RECOVERING 4 |
| 695 | #define BTRFS_FS_OPEN 5 |
| 696 | #define BTRFS_FS_QUOTA_ENABLED 6 |
| 697 | #define BTRFS_FS_QUOTA_ENABLING 7 |
| 698 | #define BTRFS_FS_QUOTA_DISABLING 8 |
| 699 | #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 |
| 700 | #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 |
| 701 | #define BTRFS_FS_BTREE_ERR 11 |
| 702 | #define BTRFS_FS_LOG1_ERR 12 |
| 703 | #define BTRFS_FS_LOG2_ERR 13 |
| 704 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 705 | struct btrfs_fs_info { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 706 | u8 fsid[BTRFS_FSID_SIZE]; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 707 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Josef Bacik | afcdd12 | 2016-09-02 15:40:02 -0400 | [diff] [blame] | 708 | unsigned long flags; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 709 | struct btrfs_root *extent_root; |
| 710 | struct btrfs_root *tree_root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 711 | struct btrfs_root *chunk_root; |
| 712 | struct btrfs_root *dev_root; |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 713 | struct btrfs_root *fs_root; |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 714 | struct btrfs_root *csum_root; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 715 | struct btrfs_root *quota_root; |
Stefan Behrens | f7a81ea | 2013-08-15 17:11:19 +0200 | [diff] [blame] | 716 | struct btrfs_root *uuid_root; |
Omar Sandoval | a5ed918 | 2015-09-29 20:50:35 -0700 | [diff] [blame] | 717 | struct btrfs_root *free_space_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 718 | |
| 719 | /* the log root tree is a directory of all the other log roots */ |
| 720 | struct btrfs_root *log_root_tree; |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 721 | |
| 722 | spinlock_t fs_roots_radix_lock; |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 723 | struct radix_tree_root fs_roots_radix; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 724 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 725 | /* block group cache stuff */ |
| 726 | spinlock_t block_group_cache_lock; |
Liu Bo | a1897fd | 2012-12-27 09:01:23 +0000 | [diff] [blame] | 727 | u64 first_logical_byte; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 728 | struct rb_root block_group_cache_tree; |
| 729 | |
Josef Bacik | 2bf6475 | 2011-09-26 17:12:22 -0400 | [diff] [blame] | 730 | /* keep track of unallocated space */ |
| 731 | spinlock_t free_chunk_lock; |
| 732 | u64 free_chunk_space; |
| 733 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 734 | struct extent_io_tree freed_extents[2]; |
| 735 | struct extent_io_tree *pinned_extents; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 736 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 737 | /* logical->physical extent mapping */ |
| 738 | struct btrfs_mapping_tree mapping_tree; |
| 739 | |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 740 | /* |
| 741 | * block reservation for extent, checksum, root tree and |
| 742 | * delayed dir index item |
| 743 | */ |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 744 | struct btrfs_block_rsv global_block_rsv; |
| 745 | /* block reservation for delay allocation */ |
| 746 | struct btrfs_block_rsv delalloc_block_rsv; |
| 747 | /* block reservation for metadata operations */ |
| 748 | struct btrfs_block_rsv trans_block_rsv; |
| 749 | /* block reservation for chunk tree */ |
| 750 | struct btrfs_block_rsv chunk_block_rsv; |
Josef Bacik | 6d668dd | 2011-11-03 22:54:25 -0400 | [diff] [blame] | 751 | /* block reservation for delayed operations */ |
| 752 | struct btrfs_block_rsv delayed_block_rsv; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 753 | |
| 754 | struct btrfs_block_rsv empty_block_rsv; |
| 755 | |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 756 | u64 generation; |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 757 | u64 last_trans_committed; |
Josef Bacik | 0a2b2a8 | 2014-01-23 10:54:11 -0500 | [diff] [blame] | 758 | u64 avg_delayed_ref_runtime; |
Chris Mason | 12fcfd2 | 2009-03-24 10:24:20 -0400 | [diff] [blame] | 759 | |
| 760 | /* |
| 761 | * this is updated to the current trans every time a full commit |
| 762 | * is required instead of the faster short fsync log commits |
| 763 | */ |
| 764 | u64 last_trans_log_full_commit; |
Stefan Behrens | 25cd999 | 2012-03-30 13:58:32 +0200 | [diff] [blame] | 765 | unsigned long mount_opt; |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 766 | /* |
| 767 | * Track requests for actions that need to be done during transaction |
| 768 | * commit (like for some mount options). |
| 769 | */ |
| 770 | unsigned long pending_changes; |
Li Zefan | 261507a0 | 2010-12-17 14:21:50 +0800 | [diff] [blame] | 771 | unsigned long compress_type:4; |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 772 | int commit_interval; |
Miao Xie | 8c6a3ee | 2013-01-29 10:05:05 +0000 | [diff] [blame] | 773 | /* |
| 774 | * It is a suggestive number, the read side is safe even it gets a |
| 775 | * wrong number because we will write out the data into a regular |
| 776 | * extent. The write side(mount/remount) is under ->s_umount lock, |
| 777 | * so it is also safe. |
| 778 | */ |
Chris Mason | 6f568d3 | 2008-01-29 16:03:38 -0500 | [diff] [blame] | 779 | u64 max_inline; |
Miao Xie | c018dae | 2013-01-29 10:07:33 +0000 | [diff] [blame] | 780 | /* |
| 781 | * Protected by ->chunk_mutex and sb->s_umount. |
| 782 | * |
| 783 | * The reason that we use two lock to protect it is because only |
| 784 | * remount and mount operations can change it and these two operations |
| 785 | * are under sb->s_umount, but the read side (chunk allocation) can not |
| 786 | * acquire sb->s_umount or the deadlock would happen. So we use two |
| 787 | * locks to protect it. On the write side, we must acquire two locks, |
| 788 | * and on the read side, we just need acquire one of them. |
| 789 | */ |
Chris Mason | 8f662a7 | 2008-01-02 10:01:11 -0500 | [diff] [blame] | 790 | u64 alloc_start; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 791 | struct btrfs_transaction *running_transaction; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 792 | wait_queue_head_t transaction_throttle; |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 793 | wait_queue_head_t transaction_wait; |
Sage Weil | bb9c12c | 2010-10-29 15:37:34 -0400 | [diff] [blame] | 794 | wait_queue_head_t transaction_blocked_wait; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 795 | wait_queue_head_t async_submit_wait; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 796 | |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 797 | /* |
| 798 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags |
| 799 | * when they are updated. |
| 800 | * |
| 801 | * Because we do not clear the flags for ever, so we needn't use |
| 802 | * the lock on the read side. |
| 803 | * |
| 804 | * We also needn't use the lock when we mount the fs, because |
| 805 | * there is no other task which will update the flag. |
| 806 | */ |
| 807 | spinlock_t super_lock; |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 808 | struct btrfs_super_block *super_copy; |
| 809 | struct btrfs_super_block *super_for_commit; |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 810 | struct super_block *sb; |
Chris Mason | d98237b | 2007-03-28 13:57:48 -0400 | [diff] [blame] | 811 | struct inode *btree_inode; |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 812 | struct backing_dev_info bdi; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 813 | struct mutex tree_log_mutex; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 814 | struct mutex transaction_kthread_mutex; |
| 815 | struct mutex cleaner_mutex; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 816 | struct mutex chunk_mutex; |
Chris Mason | 7d9eb12 | 2008-07-08 14:19:17 -0400 | [diff] [blame] | 817 | struct mutex volume_mutex; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 818 | |
Chris Mason | 1bbc621 | 2015-04-06 12:46:08 -0700 | [diff] [blame] | 819 | /* |
| 820 | * this is taken to make sure we don't set block groups ro after |
| 821 | * the free space cache has been allocated on them |
| 822 | */ |
| 823 | struct mutex ro_block_group_mutex; |
| 824 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 825 | /* this is used during read/modify/write to make sure |
| 826 | * no two ios are trying to mod the same stripe at the same |
| 827 | * time |
| 828 | */ |
| 829 | struct btrfs_stripe_hash_table *stripe_hash_table; |
| 830 | |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 831 | /* |
| 832 | * this protects the ordered operations list only while we are |
| 833 | * processing all of the entries on it. This way we make |
| 834 | * sure the commit code doesn't find the list temporarily empty |
| 835 | * because another function happens to be doing non-waiting preflush |
| 836 | * before jumping into the main commit. |
| 837 | */ |
| 838 | struct mutex ordered_operations_mutex; |
Josef Bacik | 9ffba8c | 2013-08-14 11:33:56 -0400 | [diff] [blame] | 839 | |
Josef Bacik | 9e351cc | 2014-03-13 15:42:13 -0400 | [diff] [blame] | 840 | struct rw_semaphore commit_root_sem; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 841 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 842 | struct rw_semaphore cleanup_work_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 843 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 844 | struct rw_semaphore subvol_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 845 | struct srcu_struct subvol_srcu; |
| 846 | |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 847 | spinlock_t trans_lock; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 848 | /* |
| 849 | * the reloc mutex goes with the trans lock, it is taken |
| 850 | * during commit to protect us from the relocation code |
| 851 | */ |
| 852 | struct mutex reloc_mutex; |
| 853 | |
Chris Mason | 8fd1779 | 2007-04-19 21:01:03 -0400 | [diff] [blame] | 854 | struct list_head trans_list; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 855 | struct list_head dead_roots; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 856 | struct list_head caching_block_groups; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 857 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 858 | spinlock_t delayed_iput_lock; |
| 859 | struct list_head delayed_iputs; |
Filipe Manana | c2d6cb1 | 2016-01-15 11:05:12 +0000 | [diff] [blame] | 860 | struct mutex cleaner_delayed_iput_mutex; |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 861 | |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 862 | /* this protects tree_mod_seq_list */ |
| 863 | spinlock_t tree_mod_seq_lock; |
Jan Schmidt | fc36ed7e | 2013-04-24 16:57:33 +0000 | [diff] [blame] | 864 | atomic64_t tree_mod_seq; |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 865 | struct list_head tree_mod_seq_list; |
| 866 | |
| 867 | /* this protects tree_mod_log */ |
| 868 | rwlock_t tree_mod_log_lock; |
| 869 | struct rb_root tree_mod_log; |
| 870 | |
Chris Mason | cb03c74 | 2008-05-15 16:15:45 -0400 | [diff] [blame] | 871 | atomic_t nr_async_submits; |
Chris Mason | 8c8bee1 | 2008-09-29 11:19:10 -0400 | [diff] [blame] | 872 | atomic_t async_submit_draining; |
Chris Mason | 0986fe9e | 2008-08-15 15:34:15 -0400 | [diff] [blame] | 873 | atomic_t nr_async_bios; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 874 | atomic_t async_delalloc_pages; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 875 | atomic_t open_ioctl_trans; |
Chris Mason | ce9adaa | 2008-04-09 16:28:12 -0400 | [diff] [blame] | 876 | |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 877 | /* |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 878 | * this is used to protect the following list -- ordered_roots. |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 879 | */ |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 880 | spinlock_t ordered_root_lock; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 881 | |
| 882 | /* |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 883 | * all fs/file tree roots in which there are data=ordered extents |
| 884 | * pending writeback are added into this list. |
| 885 | * |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 886 | * these can span multiple transactions and basically include |
| 887 | * every dirty data page that isn't from nodatacow |
| 888 | */ |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 889 | struct list_head ordered_roots; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 890 | |
Miao Xie | 573bfb7 | 2014-03-06 13:55:03 +0800 | [diff] [blame] | 891 | struct mutex delalloc_root_mutex; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 892 | spinlock_t delalloc_root_lock; |
| 893 | /* all fs/file tree roots that have delalloc inodes. */ |
| 894 | struct list_head delalloc_roots; |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 895 | |
| 896 | /* |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 897 | * there is a pool of worker threads for checksumming during writes |
| 898 | * and a pool for checksumming after reads. This is because readers |
| 899 | * can run with FS locks held, and the writers may be waiting for |
| 900 | * those locks. We don't want ordering in the pending list to cause |
| 901 | * deadlocks, and so the two are serviced separately. |
Chris Mason | 1cc127b | 2008-06-12 14:46:17 -0400 | [diff] [blame] | 902 | * |
| 903 | * A third pool does submit_bio to avoid deadlocking with the other |
| 904 | * two |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 905 | */ |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 906 | struct btrfs_workqueue *workers; |
| 907 | struct btrfs_workqueue *delalloc_workers; |
| 908 | struct btrfs_workqueue *flush_workers; |
| 909 | struct btrfs_workqueue *endio_workers; |
| 910 | struct btrfs_workqueue *endio_meta_workers; |
| 911 | struct btrfs_workqueue *endio_raid56_workers; |
Miao Xie | 8b110e3 | 2014-09-12 18:44:03 +0800 | [diff] [blame] | 912 | struct btrfs_workqueue *endio_repair_workers; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 913 | struct btrfs_workqueue *rmw_workers; |
| 914 | struct btrfs_workqueue *endio_meta_write_workers; |
| 915 | struct btrfs_workqueue *endio_write_workers; |
| 916 | struct btrfs_workqueue *endio_freespace_worker; |
| 917 | struct btrfs_workqueue *submit_workers; |
| 918 | struct btrfs_workqueue *caching_workers; |
| 919 | struct btrfs_workqueue *readahead_workers; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 920 | |
Chris Mason | 247e743 | 2008-07-17 12:53:51 -0400 | [diff] [blame] | 921 | /* |
| 922 | * fixup workers take dirty pages that didn't properly go through |
| 923 | * the cow mechanism and make them safe to write. It happens |
| 924 | * for the sys_munmap function call path |
| 925 | */ |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 926 | struct btrfs_workqueue *fixup_workers; |
| 927 | struct btrfs_workqueue *delayed_workers; |
Chris Mason | a79b7d4 | 2014-05-22 16:18:52 -0700 | [diff] [blame] | 928 | |
| 929 | /* the extent workers do delayed refs on the extent allocation tree */ |
| 930 | struct btrfs_workqueue *extent_workers; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 931 | struct task_struct *transaction_kthread; |
| 932 | struct task_struct *cleaner_kthread; |
Chris Mason | 4543df7 | 2008-06-11 21:47:56 -0400 | [diff] [blame] | 933 | int thread_pool_size; |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 934 | |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 935 | struct kobject *space_info_kobj; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 936 | |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 937 | u64 total_pinned; |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 938 | |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 939 | /* used to keep from writing metadata until there is a nice batch */ |
| 940 | struct percpu_counter dirty_metadata_bytes; |
Miao Xie | 963d678 | 2013-01-29 10:10:51 +0000 | [diff] [blame] | 941 | struct percpu_counter delalloc_bytes; |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 942 | s32 dirty_metadata_batch; |
Miao Xie | 963d678 | 2013-01-29 10:10:51 +0000 | [diff] [blame] | 943 | s32 delalloc_batch; |
| 944 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 945 | struct list_head dirty_cowonly_roots; |
| 946 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 947 | struct btrfs_fs_devices *fs_devices; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 948 | |
| 949 | /* |
| 950 | * the space_info list is almost entirely read only. It only changes |
| 951 | * when we add a new raid type to the FS, and that happens |
| 952 | * very rarely. RCU is used to protect it. |
| 953 | */ |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 954 | struct list_head space_info; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 955 | |
Li Zefan | b4d7c3c | 2012-07-09 20:21:07 -0600 | [diff] [blame] | 956 | struct btrfs_space_info *data_sinfo; |
| 957 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 958 | struct reloc_control *reloc_ctl; |
| 959 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 960 | /* data_alloc_cluster is only used in ssd mode */ |
| 961 | struct btrfs_free_cluster data_alloc_cluster; |
| 962 | |
| 963 | /* all metadata allocations go through this cluster */ |
| 964 | struct btrfs_free_cluster meta_alloc_cluster; |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 965 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 966 | /* auto defrag inodes go here */ |
| 967 | spinlock_t defrag_inodes_lock; |
| 968 | struct rb_root defrag_inodes; |
| 969 | atomic_t defrag_running; |
| 970 | |
Miao Xie | de98ced | 2013-01-29 10:13:12 +0000 | [diff] [blame] | 971 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
| 972 | seqlock_t profiles_lock; |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 973 | /* |
| 974 | * these three are in extended format (availability of single |
| 975 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other |
| 976 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) |
| 977 | */ |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 978 | u64 avail_data_alloc_bits; |
| 979 | u64 avail_metadata_alloc_bits; |
| 980 | u64 avail_system_alloc_bits; |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 981 | |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 982 | /* restriper state */ |
| 983 | spinlock_t balance_lock; |
| 984 | struct mutex balance_mutex; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 985 | atomic_t balance_running; |
| 986 | atomic_t balance_pause_req; |
Ilya Dryomov | a7e99c6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 987 | atomic_t balance_cancel_req; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 988 | struct btrfs_balance_control *balance_ctl; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 989 | wait_queue_head_t balance_wait_q; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 990 | |
Josef Bacik | 97e728d | 2009-04-21 17:40:57 -0400 | [diff] [blame] | 991 | unsigned data_chunk_allocations; |
| 992 | unsigned metadata_ratio; |
| 993 | |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 994 | void *bdev_holder; |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 995 | |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 996 | /* private scrub information */ |
| 997 | struct mutex scrub_lock; |
| 998 | atomic_t scrubs_running; |
| 999 | atomic_t scrub_pause_req; |
| 1000 | atomic_t scrubs_paused; |
| 1001 | atomic_t scrub_cancel_req; |
| 1002 | wait_queue_head_t scrub_pause_wait; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1003 | int scrub_workers_refcnt; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1004 | struct btrfs_workqueue *scrub_workers; |
| 1005 | struct btrfs_workqueue *scrub_wr_completion_workers; |
| 1006 | struct btrfs_workqueue *scrub_nocow_workers; |
Zhao Lei | 20b2e30 | 2015-06-04 20:09:15 +0800 | [diff] [blame] | 1007 | struct btrfs_workqueue *scrub_parity_workers; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1008 | |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1009 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
| 1010 | u32 check_integrity_print_mask; |
| 1011 | #endif |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1012 | /* is qgroup tracking in a consistent state? */ |
| 1013 | u64 qgroup_flags; |
| 1014 | |
| 1015 | /* holds configuration and tracking. Protected by qgroup_lock */ |
| 1016 | struct rb_root qgroup_tree; |
Josef Bacik | fcebe45 | 2014-05-13 17:30:47 -0700 | [diff] [blame] | 1017 | struct rb_root qgroup_op_tree; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1018 | spinlock_t qgroup_lock; |
Josef Bacik | fcebe45 | 2014-05-13 17:30:47 -0700 | [diff] [blame] | 1019 | spinlock_t qgroup_op_lock; |
| 1020 | atomic_t qgroup_op_seq; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1021 | |
Wang Shilong | 1e8f915 | 2013-05-06 11:03:27 +0000 | [diff] [blame] | 1022 | /* |
| 1023 | * used to avoid frequently calling ulist_alloc()/ulist_free() |
| 1024 | * when doing qgroup accounting, it must be protected by qgroup_lock. |
| 1025 | */ |
| 1026 | struct ulist *qgroup_ulist; |
| 1027 | |
Wang Shilong | f2f6ed3 | 2013-04-07 10:50:16 +0000 | [diff] [blame] | 1028 | /* protect user change for quota operations */ |
| 1029 | struct mutex qgroup_ioctl_lock; |
| 1030 | |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1031 | /* list of dirty qgroups to be written at next commit */ |
| 1032 | struct list_head dirty_qgroups; |
| 1033 | |
Qu Wenruo | e69bcee | 2015-04-17 10:23:16 +0800 | [diff] [blame] | 1034 | /* used by qgroup for an efficient tree traversal */ |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1035 | u64 qgroup_seq; |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1036 | |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1037 | /* qgroup rescan items */ |
| 1038 | struct mutex qgroup_rescan_lock; /* protects the progress item */ |
| 1039 | struct btrfs_key qgroup_rescan_progress; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1040 | struct btrfs_workqueue *qgroup_rescan_workers; |
Jan Schmidt | 57254b6e | 2013-05-06 19:14:17 +0000 | [diff] [blame] | 1041 | struct completion qgroup_rescan_completion; |
Jan Schmidt | b382a32 | 2013-05-28 15:47:24 +0000 | [diff] [blame] | 1042 | struct btrfs_work qgroup_rescan_work; |
Jeff Mahoney | d2c609b | 2016-08-15 12:10:33 -0400 | [diff] [blame] | 1043 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1044 | |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1045 | /* filesystem state */ |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 1046 | unsigned long fs_state; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1047 | |
| 1048 | struct btrfs_delayed_root *delayed_root; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1049 | |
Arne Jansen | 90519d6 | 2011-05-23 14:30:00 +0200 | [diff] [blame] | 1050 | /* readahead tree */ |
| 1051 | spinlock_t reada_lock; |
| 1052 | struct radix_tree_root reada_tree; |
Chris Mason | 531f4b1a | 2011-11-06 03:05:08 -0500 | [diff] [blame] | 1053 | |
Zhao Lei | 2fefd55 | 2016-01-07 18:38:48 +0800 | [diff] [blame] | 1054 | /* readahead works cnt */ |
| 1055 | atomic_t reada_works_cnt; |
| 1056 | |
Josef Bacik | f28491e | 2013-12-16 13:24:27 -0500 | [diff] [blame] | 1057 | /* Extent buffer radix tree */ |
| 1058 | spinlock_t buffer_lock; |
| 1059 | struct radix_tree_root buffer_radix; |
| 1060 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1061 | /* next backup root to be overwritten */ |
| 1062 | int backup_root_index; |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 1063 | |
| 1064 | int num_tolerated_disk_barrier_failures; |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 1065 | |
| 1066 | /* device replace state */ |
| 1067 | struct btrfs_dev_replace dev_replace; |
Stefan Behrens | 5ac00ad | 2012-11-05 17:54:08 +0100 | [diff] [blame] | 1068 | |
| 1069 | atomic_t mutually_exclusive_operation_running; |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 1070 | |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 1071 | struct percpu_counter bio_counter; |
| 1072 | wait_queue_head_t replace_wait; |
| 1073 | |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 1074 | struct semaphore uuid_tree_rescan_sem; |
Miao Xie | 21c7e75 | 2014-05-13 17:29:04 -0700 | [diff] [blame] | 1075 | |
| 1076 | /* Used to reclaim the metadata space in the background. */ |
| 1077 | struct work_struct async_reclaim_work; |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 1078 | |
| 1079 | spinlock_t unused_bgs_lock; |
| 1080 | struct list_head unused_bgs; |
Filipe Manana | d4b450c | 2015-01-29 19:18:25 +0000 | [diff] [blame] | 1081 | struct mutex unused_bg_unpin_mutex; |
Filipe Manana | 67c5e7d | 2015-06-11 00:58:53 +0100 | [diff] [blame] | 1082 | struct mutex delete_unused_bgs_mutex; |
Qu Wenruo | f667aef | 2014-09-23 13:40:08 +0800 | [diff] [blame] | 1083 | |
| 1084 | /* For btrfs to record security options */ |
| 1085 | struct security_mnt_opts security_opts; |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 1086 | |
| 1087 | /* |
| 1088 | * Chunks that can't be freed yet (under a trim/discard operation) |
| 1089 | * and will be latter freed. Protected by fs_info->chunk_mutex. |
| 1090 | */ |
| 1091 | struct list_head pinned_chunks; |
Chris Mason | 511711a | 2015-12-30 07:52:35 -0800 | [diff] [blame] | 1092 | |
Wang Xiaoguang | 9e7cc91 | 2016-08-01 13:28:08 +0800 | [diff] [blame] | 1093 | /* Used to record internally whether fs has been frozen */ |
| 1094 | int fs_frozen; |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1095 | |
| 1096 | /* Cached block sizes */ |
| 1097 | u32 nodesize; |
| 1098 | u32 sectorsize; |
| 1099 | u32 stripesize; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1100 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1101 | |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1102 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
| 1103 | { |
| 1104 | return sb->s_fs_info; |
| 1105 | } |
| 1106 | |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 1107 | struct btrfs_subvolume_writers { |
| 1108 | struct percpu_counter counter; |
| 1109 | wait_queue_head_t wait; |
| 1110 | }; |
| 1111 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1112 | /* |
Miao Xie | 27cdeb7 | 2014-04-02 19:51:05 +0800 | [diff] [blame] | 1113 | * The state of btrfs root |
| 1114 | */ |
| 1115 | /* |
| 1116 | * btrfs_record_root_in_trans is a multi-step process, |
| 1117 | * and it can race with the balancing code. But the |
| 1118 | * race is very small, and only the first time the root |
| 1119 | * is added to each transaction. So IN_TRANS_SETUP |
| 1120 | * is used to tell us when more checks are required |
| 1121 | */ |
| 1122 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 |
| 1123 | #define BTRFS_ROOT_REF_COWS 1 |
| 1124 | #define BTRFS_ROOT_TRACK_DIRTY 2 |
| 1125 | #define BTRFS_ROOT_IN_RADIX 3 |
Jeff Mahoney | f5ee5c9 | 2016-06-21 09:52:41 -0400 | [diff] [blame] | 1126 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
| 1127 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 |
| 1128 | #define BTRFS_ROOT_FORCE_COW 6 |
| 1129 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 |
| 1130 | #define BTRFS_ROOT_DIRTY 8 |
Miao Xie | 27cdeb7 | 2014-04-02 19:51:05 +0800 | [diff] [blame] | 1131 | |
| 1132 | /* |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1133 | * in ram representation of the tree. extent_root is used for all allocations |
Chris Mason | f2458e1 | 2007-04-25 15:52:25 -0400 | [diff] [blame] | 1134 | * and for the extent tree extent_root root. |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1135 | */ |
| 1136 | struct btrfs_root { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1137 | struct extent_buffer *node; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1138 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1139 | struct extent_buffer *commit_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1140 | struct btrfs_root *log_root; |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 1141 | struct btrfs_root *reloc_root; |
Yan Zheng | 31153d8 | 2008-07-28 15:32:19 -0400 | [diff] [blame] | 1142 | |
Miao Xie | 27cdeb7 | 2014-04-02 19:51:05 +0800 | [diff] [blame] | 1143 | unsigned long state; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1144 | struct btrfs_root_item root_item; |
| 1145 | struct btrfs_key root_key; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1146 | struct btrfs_fs_info *fs_info; |
Chris Mason | d0c803c | 2008-09-11 16:17:57 -0400 | [diff] [blame] | 1147 | struct extent_io_tree dirty_log_pages; |
| 1148 | |
Chris Mason | a213501 | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1149 | struct mutex objectid_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1150 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1151 | spinlock_t accounting_lock; |
| 1152 | struct btrfs_block_rsv *block_rsv; |
| 1153 | |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1154 | /* free ino cache stuff */ |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1155 | struct btrfs_free_space_ctl *free_ino_ctl; |
David Sterba | 57cdc8d | 2014-02-05 02:37:48 +0100 | [diff] [blame] | 1156 | enum btrfs_caching_type ino_cache_state; |
| 1157 | spinlock_t ino_cache_lock; |
| 1158 | wait_queue_head_t ino_cache_wait; |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1159 | struct btrfs_free_space_ctl *free_ino_pinned; |
David Sterba | 57cdc8d | 2014-02-05 02:37:48 +0100 | [diff] [blame] | 1160 | u64 ino_cache_progress; |
| 1161 | struct inode *ino_cache_inode; |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1162 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1163 | struct mutex log_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1164 | wait_queue_head_t log_writer_wait; |
| 1165 | wait_queue_head_t log_commit_wait[2]; |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 1166 | struct list_head log_ctxs[2]; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1167 | atomic_t log_writers; |
| 1168 | atomic_t log_commit[2]; |
Miao Xie | 2ecb792 | 2012-09-06 04:04:27 -0600 | [diff] [blame] | 1169 | atomic_t log_batch; |
Miao Xie | bb14a59 | 2014-02-20 18:08:56 +0800 | [diff] [blame] | 1170 | int log_transid; |
Miao Xie | d1433de | 2014-02-20 18:08:59 +0800 | [diff] [blame] | 1171 | /* No matter the commit succeeds or not*/ |
| 1172 | int log_transid_committed; |
| 1173 | /* Just be updated when the commit succeeds. */ |
Miao Xie | bb14a59 | 2014-02-20 18:08:56 +0800 | [diff] [blame] | 1174 | int last_log_commit; |
Josef Bacik | ff782e0 | 2009-10-08 15:30:04 -0400 | [diff] [blame] | 1175 | pid_t log_start_pid; |
Chris Mason | ea8c281 | 2008-08-04 23:17:27 -0400 | [diff] [blame] | 1176 | |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1177 | u64 objectid; |
| 1178 | u64 last_trans; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1179 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1180 | u32 type; |
Yan, Zheng | 13a8a7c | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1181 | |
| 1182 | u64 highest_objectid; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1183 | |
David Sterba | 05653ef | 2016-07-15 15:23:37 +0200 | [diff] [blame] | 1184 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
Chris Mason | 0d4cf4e | 2014-10-07 13:24:20 -0700 | [diff] [blame] | 1185 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
Josef Bacik | faa2dbf | 2014-05-07 17:06:09 -0400 | [diff] [blame] | 1186 | u64 alloc_bytenr; |
David Sterba | 05653ef | 2016-07-15 15:23:37 +0200 | [diff] [blame] | 1187 | #endif |
Josef Bacik | faa2dbf | 2014-05-07 17:06:09 -0400 | [diff] [blame] | 1188 | |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1189 | u64 defrag_trans_start; |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 1190 | struct btrfs_key defrag_progress; |
Chris Mason | 0ef3e66 | 2008-05-24 14:04:53 -0400 | [diff] [blame] | 1191 | struct btrfs_key defrag_max; |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1192 | char *name; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1193 | |
| 1194 | /* the dirty list is only used by non-reference counted roots */ |
| 1195 | struct list_head dirty_list; |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 1196 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1197 | struct list_head root_list; |
| 1198 | |
Josef Bacik | 2ab28f3 | 2012-10-12 15:27:49 -0400 | [diff] [blame] | 1199 | spinlock_t log_extents_lock[2]; |
| 1200 | struct list_head logged_list[2]; |
| 1201 | |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1202 | spinlock_t orphan_lock; |
Josef Bacik | 8a35d95 | 2012-05-23 14:26:42 -0400 | [diff] [blame] | 1203 | atomic_t orphan_inodes; |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1204 | struct btrfs_block_rsv *orphan_block_rsv; |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1205 | int orphan_cleanup_state; |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1206 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1207 | spinlock_t inode_lock; |
| 1208 | /* red-black tree that keeps track of in-memory inodes */ |
| 1209 | struct rb_root inode_tree; |
| 1210 | |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1211 | /* |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1212 | * radix tree that keeps track of delayed nodes of every inode, |
| 1213 | * protected by inode_lock |
| 1214 | */ |
| 1215 | struct radix_tree_root delayed_nodes_tree; |
| 1216 | /* |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1217 | * right now this just gets used so that a root has its own devid |
| 1218 | * for stat. It may be used for more later |
| 1219 | */ |
Al Viro | 0ee5dc6 | 2011-07-07 15:44:25 -0400 | [diff] [blame] | 1220 | dev_t anon_dev; |
Liu Bo | f1ebcc7 | 2011-11-14 20:48:06 -0500 | [diff] [blame] | 1221 | |
Anand Jain | 5f3ab90 | 2012-12-07 09:28:54 +0000 | [diff] [blame] | 1222 | spinlock_t root_item_lock; |
Miao Xie | b0feb9d | 2013-05-15 07:48:20 +0000 | [diff] [blame] | 1223 | atomic_t refs; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1224 | |
Miao Xie | 573bfb7 | 2014-03-06 13:55:03 +0800 | [diff] [blame] | 1225 | struct mutex delalloc_mutex; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1226 | spinlock_t delalloc_lock; |
| 1227 | /* |
| 1228 | * all of the inodes that have delalloc bytes. It is possible for |
| 1229 | * this list to be empty even when there is still dirty data=ordered |
| 1230 | * extents waiting to finish IO. |
| 1231 | */ |
| 1232 | struct list_head delalloc_inodes; |
| 1233 | struct list_head delalloc_root; |
| 1234 | u64 nr_delalloc_inodes; |
Miao Xie | 31f3d25 | 2014-03-06 13:55:02 +0800 | [diff] [blame] | 1235 | |
| 1236 | struct mutex ordered_extent_mutex; |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1237 | /* |
| 1238 | * this is used by the balancing code to wait for all the pending |
| 1239 | * ordered extents |
| 1240 | */ |
| 1241 | spinlock_t ordered_extent_lock; |
| 1242 | |
| 1243 | /* |
| 1244 | * all of the data=ordered extents pending writeback |
| 1245 | * these can span multiple transactions and basically include |
| 1246 | * every dirty data page that isn't from nodatacow |
| 1247 | */ |
| 1248 | struct list_head ordered_extents; |
| 1249 | struct list_head ordered_root; |
| 1250 | u64 nr_ordered_extents; |
David Sterba | 2c68653 | 2013-12-16 17:34:17 +0100 | [diff] [blame] | 1251 | |
| 1252 | /* |
| 1253 | * Number of currently running SEND ioctls to prevent |
| 1254 | * manipulation with the read-only status via SUBVOL_SETFLAGS |
| 1255 | */ |
| 1256 | int send_in_progress; |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 1257 | struct btrfs_subvolume_writers *subv_writers; |
| 1258 | atomic_t will_be_snapshoted; |
Qu Wenruo | 55eeaf0 | 2015-09-08 17:08:38 +0800 | [diff] [blame] | 1259 | |
| 1260 | /* For qgroup metadata space reserve */ |
| 1261 | atomic_t qgroup_meta_rsv; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1262 | }; |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1263 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
| 1264 | { |
| 1265 | return btrfs_sb(inode->i_sb)->sectorsize; |
| 1266 | } |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1267 | |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1268 | static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 blocksize) |
| 1269 | { |
| 1270 | return blocksize - sizeof(struct btrfs_header); |
| 1271 | } |
| 1272 | |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1273 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1274 | { |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1275 | return __BTRFS_LEAF_DATA_SIZE(info->nodesize); |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1276 | } |
| 1277 | |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1278 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1279 | { |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1280 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1281 | } |
| 1282 | |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1283 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1284 | { |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1285 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ |
| 1289 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1290 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1291 | { |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1292 | return BTRFS_MAX_ITEM_SIZE(info) - |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1293 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
| 1294 | } |
| 1295 | |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1296 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1297 | { |
Jeff Mahoney | da17066 | 2016-06-15 09:22:56 -0400 | [diff] [blame] | 1298 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
Jeff Mahoney | 1db1ff9 | 2016-06-15 10:33:06 -0400 | [diff] [blame] | 1299 | } |
| 1300 | |
David Sterba | 0942caa | 2011-06-28 15:10:37 +0000 | [diff] [blame] | 1301 | /* |
| 1302 | * Flags for mount options. |
| 1303 | * |
| 1304 | * Note: don't forget to add new options to btrfs_show_options() |
| 1305 | */ |
Chris Mason | 21ad10c | 2008-01-09 09:23:21 -0500 | [diff] [blame] | 1306 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
| 1307 | #define BTRFS_MOUNT_NODATACOW (1 << 1) |
| 1308 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) |
Chris Mason | e18e480 | 2008-01-18 10:54:22 -0500 | [diff] [blame] | 1309 | #define BTRFS_MOUNT_SSD (1 << 3) |
Chris Mason | dfe2502 | 2008-05-13 13:46:40 -0400 | [diff] [blame] | 1310 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 1311 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
Sage Weil | 3a5e140 | 2009-04-02 16:49:40 -0400 | [diff] [blame] | 1312 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
Sage Weil | dccae99 | 2009-04-02 16:59:01 -0400 | [diff] [blame] | 1313 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
Chris Mason | 451d758 | 2009-06-09 20:28:34 -0400 | [diff] [blame] | 1314 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
Chris Mason | c289811 | 2009-06-10 09:51:32 -0400 | [diff] [blame] | 1315 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
Christoph Hellwig | e244a0a | 2009-10-14 09:24:59 -0400 | [diff] [blame] | 1316 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
Chris Mason | a555f81 | 2010-01-28 16:18:15 -0500 | [diff] [blame] | 1317 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1318 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
Josef Bacik | 88c2ba3 | 2010-09-21 14:21:34 -0400 | [diff] [blame] | 1319 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
Sage Weil | 4260f7c | 2010-10-29 15:46:43 -0400 | [diff] [blame] | 1320 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
Chris Mason | 9143565 | 2011-02-16 13:10:41 -0500 | [diff] [blame] | 1321 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1322 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
Chris Mason | 4b9465c | 2011-06-03 09:36:29 -0400 | [diff] [blame] | 1323 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
Qu Wenruo | 8dcddfa | 2016-01-19 10:23:02 +0800 | [diff] [blame] | 1324 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
Ilya Dryomov | 9555c6c | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 1325 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
Chris Mason | c126dea | 2012-01-16 15:27:58 -0500 | [diff] [blame] | 1326 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
| 1327 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 1328 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
Stefan Behrens | f420ee1 | 2013-08-15 17:11:24 +0200 | [diff] [blame] | 1329 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
Josef Bacik | d0bd456 | 2015-09-23 14:54:14 -0400 | [diff] [blame] | 1330 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
| 1331 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) |
Chris Mason | f7d3d2f | 2015-12-18 11:11:10 -0800 | [diff] [blame] | 1332 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
Qu Wenruo | 96da091 | 2016-01-19 10:23:03 +0800 | [diff] [blame] | 1333 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 1334 | |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 1335 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
David Sterba | f7e98a7 | 2015-10-08 14:14:16 +0200 | [diff] [blame] | 1336 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 1337 | |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 1338 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
| 1339 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) |
Miao Xie | dc81cdc | 2013-02-20 23:32:52 -0700 | [diff] [blame] | 1340 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
Jeff Mahoney | 3cdde22 | 2016-06-09 21:38:35 -0400 | [diff] [blame] | 1341 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 1342 | BTRFS_MOUNT_##opt) |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 1343 | |
Jeff Mahoney | 3cdde22 | 2016-06-09 21:38:35 -0400 | [diff] [blame] | 1344 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
Wang Shilong | 9d89ce6 | 2014-04-23 19:33:33 +0800 | [diff] [blame] | 1345 | { \ |
Jeff Mahoney | 3cdde22 | 2016-06-09 21:38:35 -0400 | [diff] [blame] | 1346 | if (!btrfs_test_opt(fs_info, opt)) \ |
| 1347 | btrfs_info(fs_info, fmt, ##args); \ |
| 1348 | btrfs_set_opt(fs_info->mount_opt, opt); \ |
Wang Shilong | 9d89ce6 | 2014-04-23 19:33:33 +0800 | [diff] [blame] | 1349 | } |
| 1350 | |
Jeff Mahoney | 3cdde22 | 2016-06-09 21:38:35 -0400 | [diff] [blame] | 1351 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
Wang Shilong | 9d89ce6 | 2014-04-23 19:33:33 +0800 | [diff] [blame] | 1352 | { \ |
Jeff Mahoney | 3cdde22 | 2016-06-09 21:38:35 -0400 | [diff] [blame] | 1353 | if (btrfs_test_opt(fs_info, opt)) \ |
| 1354 | btrfs_info(fs_info, fmt, ##args); \ |
| 1355 | btrfs_clear_opt(fs_info->mount_opt, opt); \ |
Wang Shilong | 9d89ce6 | 2014-04-23 19:33:33 +0800 | [diff] [blame] | 1356 | } |
| 1357 | |
Josef Bacik | d0bd456 | 2015-09-23 14:54:14 -0400 | [diff] [blame] | 1358 | #ifdef CONFIG_BTRFS_DEBUG |
| 1359 | static inline int |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 1360 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
Josef Bacik | d0bd456 | 2015-09-23 14:54:14 -0400 | [diff] [blame] | 1361 | { |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 1362 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
Jeff Mahoney | 0b246af | 2016-06-22 18:54:23 -0400 | [diff] [blame] | 1363 | |
| 1364 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && |
Josef Bacik | d0bd456 | 2015-09-23 14:54:14 -0400 | [diff] [blame] | 1365 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
Jeff Mahoney | 0b246af | 2016-06-22 18:54:23 -0400 | [diff] [blame] | 1366 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
Josef Bacik | d0bd456 | 2015-09-23 14:54:14 -0400 | [diff] [blame] | 1367 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
| 1368 | } |
| 1369 | #endif |
| 1370 | |
Yan | b98b676 | 2008-01-08 15:54:37 -0500 | [diff] [blame] | 1371 | /* |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 1372 | * Requests for changes that need to be done during transaction commit. |
| 1373 | * |
| 1374 | * Internal mount options that are used for special handling of the real |
| 1375 | * mount options (eg. cannot be set during remount and have to be set during |
| 1376 | * transaction commit) |
| 1377 | */ |
| 1378 | |
David Sterba | 7e1876a | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 1379 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
| 1380 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) |
David Sterba | d51033d | 2014-11-12 14:24:35 +0100 | [diff] [blame] | 1381 | #define BTRFS_PENDING_COMMIT (2) |
David Sterba | 7e1876a | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 1382 | |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 1383 | #define btrfs_test_pending(info, opt) \ |
| 1384 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) |
| 1385 | #define btrfs_set_pending(info, opt) \ |
| 1386 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) |
| 1387 | #define btrfs_clear_pending(info, opt) \ |
| 1388 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) |
| 1389 | |
| 1390 | /* |
| 1391 | * Helpers for setting pending mount option changes. |
| 1392 | * |
| 1393 | * Expects corresponding macros |
| 1394 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name |
| 1395 | */ |
| 1396 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ |
| 1397 | do { \ |
| 1398 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ |
| 1399 | btrfs_info((info), fmt, ##args); \ |
| 1400 | btrfs_set_pending((info), SET_##opt); \ |
| 1401 | btrfs_clear_pending((info), CLEAR_##opt); \ |
| 1402 | } \ |
| 1403 | } while(0) |
| 1404 | |
| 1405 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ |
| 1406 | do { \ |
| 1407 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ |
| 1408 | btrfs_info((info), fmt, ##args); \ |
| 1409 | btrfs_set_pending((info), CLEAR_##opt); \ |
| 1410 | btrfs_clear_pending((info), SET_##opt); \ |
| 1411 | } \ |
| 1412 | } while(0) |
| 1413 | |
| 1414 | /* |
Yan | b98b676 | 2008-01-08 15:54:37 -0500 | [diff] [blame] | 1415 | * Inode flags |
| 1416 | */ |
Yan | fdebe2b | 2008-01-14 13:26:08 -0500 | [diff] [blame] | 1417 | #define BTRFS_INODE_NODATASUM (1 << 0) |
| 1418 | #define BTRFS_INODE_NODATACOW (1 << 1) |
| 1419 | #define BTRFS_INODE_READONLY (1 << 2) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 1420 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 1421 | #define BTRFS_INODE_PREALLOC (1 << 4) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 1422 | #define BTRFS_INODE_SYNC (1 << 5) |
| 1423 | #define BTRFS_INODE_IMMUTABLE (1 << 6) |
| 1424 | #define BTRFS_INODE_APPEND (1 << 7) |
| 1425 | #define BTRFS_INODE_NODUMP (1 << 8) |
| 1426 | #define BTRFS_INODE_NOATIME (1 << 9) |
| 1427 | #define BTRFS_INODE_DIRSYNC (1 << 10) |
Liu Bo | 75e7cb7 | 2011-03-22 10:12:20 +0000 | [diff] [blame] | 1428 | #define BTRFS_INODE_COMPRESS (1 << 11) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 1429 | |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 1430 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
| 1431 | |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 1432 | struct btrfs_map_token { |
| 1433 | struct extent_buffer *eb; |
| 1434 | char *kaddr; |
| 1435 | unsigned long offset; |
| 1436 | }; |
| 1437 | |
Chandan Rajendra | 2e78c92 | 2016-01-21 15:55:53 +0530 | [diff] [blame] | 1438 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
| 1439 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) |
| 1440 | |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 1441 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
| 1442 | { |
Josef Bacik | ad91455 | 2012-10-15 13:39:33 -0400 | [diff] [blame] | 1443 | token->kaddr = NULL; |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 1444 | } |
| 1445 | |
Nicholas D Steeves | 0132761 | 2016-05-19 21:18:45 -0400 | [diff] [blame] | 1446 | /* some macros to generate set/get functions for the struct fields. This |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1447 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
| 1448 | * one for u8: |
| 1449 | */ |
| 1450 | #define le8_to_cpu(v) (v) |
| 1451 | #define cpu_to_le8(v) (v) |
| 1452 | #define __le8 u8 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1453 | |
Jeff Mahoney | 62e8557 | 2016-09-20 10:05:01 -0400 | [diff] [blame] | 1454 | #define read_eb_member(eb, ptr, type, member, result) (\ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1455 | read_extent_buffer(eb, (char *)(result), \ |
| 1456 | ((unsigned long)(ptr)) + \ |
| 1457 | offsetof(type, member), \ |
| 1458 | sizeof(((type *)0)->member))) |
| 1459 | |
Jeff Mahoney | 62e8557 | 2016-09-20 10:05:01 -0400 | [diff] [blame] | 1460 | #define write_eb_member(eb, ptr, type, member, result) (\ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1461 | write_extent_buffer(eb, (char *)(result), \ |
| 1462 | ((unsigned long)(ptr)) + \ |
| 1463 | offsetof(type, member), \ |
| 1464 | sizeof(((type *)0)->member))) |
| 1465 | |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 1466 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
| 1467 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1468 | unsigned long off, \ |
| 1469 | struct btrfs_map_token *token); \ |
| 1470 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1471 | unsigned long off, u##bits val, \ |
| 1472 | struct btrfs_map_token *token); \ |
| 1473 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1474 | unsigned long off) \ |
| 1475 | { \ |
| 1476 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ |
| 1477 | } \ |
| 1478 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1479 | unsigned long off, u##bits val) \ |
| 1480 | { \ |
| 1481 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ |
| 1482 | } |
| 1483 | |
| 1484 | DECLARE_BTRFS_SETGET_BITS(8) |
| 1485 | DECLARE_BTRFS_SETGET_BITS(16) |
| 1486 | DECLARE_BTRFS_SETGET_BITS(32) |
| 1487 | DECLARE_BTRFS_SETGET_BITS(64) |
| 1488 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1489 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 1490 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
| 1491 | { \ |
| 1492 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1493 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
| 1494 | } \ |
| 1495 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ |
| 1496 | u##bits val) \ |
| 1497 | { \ |
| 1498 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1499 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
| 1500 | } \ |
| 1501 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ |
| 1502 | struct btrfs_map_token *token) \ |
| 1503 | { \ |
| 1504 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1505 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ |
| 1506 | } \ |
| 1507 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ |
| 1508 | type *s, u##bits val, \ |
| 1509 | struct btrfs_map_token *token) \ |
| 1510 | { \ |
| 1511 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1512 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ |
| 1513 | } |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1514 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1515 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ |
| 1516 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ |
| 1517 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 1518 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 1519 | u##bits res = le##bits##_to_cpu(p->member); \ |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 1520 | return res; \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1521 | } \ |
| 1522 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ |
| 1523 | u##bits val) \ |
| 1524 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 1525 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 1526 | p->member = cpu_to_le##bits(val); \ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1527 | } |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1528 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1529 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
| 1530 | static inline u##bits btrfs_##name(type *s) \ |
| 1531 | { \ |
| 1532 | return le##bits##_to_cpu(s->member); \ |
| 1533 | } \ |
| 1534 | static inline void btrfs_set_##name(type *s, u##bits val) \ |
| 1535 | { \ |
| 1536 | s->member = cpu_to_le##bits(val); \ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1537 | } |
| 1538 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1539 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
| 1540 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); |
| 1541 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
| 1542 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); |
| 1543 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 1544 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
| 1545 | start_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1546 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
| 1547 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1548 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
| 1549 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); |
| 1550 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1551 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1552 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1553 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
| 1554 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, |
| 1555 | total_bytes, 64); |
| 1556 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, |
| 1557 | bytes_used, 64); |
| 1558 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, |
| 1559 | io_align, 32); |
| 1560 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, |
| 1561 | io_width, 32); |
| 1562 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, |
| 1563 | sector_size, 32); |
| 1564 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1565 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
| 1566 | dev_group, 32); |
| 1567 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, |
| 1568 | seek_speed, 8); |
| 1569 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, |
| 1570 | bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1571 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
| 1572 | generation, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1573 | |
Geert Uytterhoeven | 410ba3a | 2013-08-20 13:20:11 +0200 | [diff] [blame] | 1574 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1575 | { |
Geert Uytterhoeven | 410ba3a | 2013-08-20 13:20:11 +0200 | [diff] [blame] | 1576 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1577 | } |
| 1578 | |
Geert Uytterhoeven | 1473b24 | 2013-08-20 13:20:12 +0200 | [diff] [blame] | 1579 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1580 | { |
Geert Uytterhoeven | 1473b24 | 2013-08-20 13:20:12 +0200 | [diff] [blame] | 1581 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1582 | } |
| 1583 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1584 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1585 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
| 1586 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); |
| 1587 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); |
| 1588 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); |
| 1589 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); |
| 1590 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); |
| 1591 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 1592 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1593 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
| 1594 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); |
| 1595 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1596 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
| 1597 | { |
| 1598 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); |
| 1599 | } |
| 1600 | |
| 1601 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1602 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
| 1603 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, |
| 1604 | stripe_len, 64); |
| 1605 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, |
| 1606 | io_align, 32); |
| 1607 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, |
| 1608 | io_width, 32); |
| 1609 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, |
| 1610 | sector_size, 32); |
| 1611 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); |
| 1612 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, |
| 1613 | num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 1614 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
| 1615 | sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1616 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
| 1617 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); |
| 1618 | |
| 1619 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, |
| 1620 | int nr) |
| 1621 | { |
| 1622 | unsigned long offset = (unsigned long)c; |
| 1623 | offset += offsetof(struct btrfs_chunk, stripe); |
| 1624 | offset += nr * sizeof(struct btrfs_stripe); |
| 1625 | return (struct btrfs_stripe *)offset; |
| 1626 | } |
| 1627 | |
Chris Mason | a443755 | 2008-04-18 10:29:38 -0400 | [diff] [blame] | 1628 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
| 1629 | { |
| 1630 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); |
| 1631 | } |
| 1632 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1633 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
| 1634 | struct btrfs_chunk *c, int nr) |
| 1635 | { |
| 1636 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); |
| 1637 | } |
| 1638 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1639 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
| 1640 | struct btrfs_chunk *c, int nr) |
| 1641 | { |
| 1642 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); |
| 1643 | } |
| 1644 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1645 | /* struct btrfs_block_group_item */ |
| 1646 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, |
| 1647 | used, 64); |
| 1648 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, |
| 1649 | used, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1650 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
| 1651 | struct btrfs_block_group_item, chunk_objectid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1652 | |
| 1653 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1654 | struct btrfs_block_group_item, chunk_objectid, 64); |
| 1655 | BTRFS_SETGET_FUNCS(disk_block_group_flags, |
| 1656 | struct btrfs_block_group_item, flags, 64); |
| 1657 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, |
| 1658 | struct btrfs_block_group_item, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1659 | |
Omar Sandoval | 208acb8 | 2015-09-29 20:50:34 -0700 | [diff] [blame] | 1660 | /* struct btrfs_free_space_info */ |
| 1661 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, |
| 1662 | extent_count, 32); |
| 1663 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); |
| 1664 | |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 1665 | /* struct btrfs_inode_ref */ |
| 1666 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 1667 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 1668 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 1669 | /* struct btrfs_inode_extref */ |
| 1670 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, |
| 1671 | parent_objectid, 64); |
| 1672 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, |
| 1673 | name_len, 16); |
| 1674 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); |
| 1675 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1676 | /* struct btrfs_inode_item */ |
| 1677 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 1678 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1679 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1680 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
Yan Zheng | a76a3cd | 2008-10-09 11:46:29 -0400 | [diff] [blame] | 1681 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1682 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
| 1683 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 1684 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); |
| 1685 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); |
| 1686 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1687 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 1688 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 1689 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
| 1690 | generation, 64); |
| 1691 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, |
| 1692 | sequence, 64); |
| 1693 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, |
| 1694 | transid, 64); |
| 1695 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); |
| 1696 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, |
| 1697 | nbytes, 64); |
| 1698 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, |
| 1699 | block_group, 64); |
| 1700 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 1701 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); |
| 1702 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); |
| 1703 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); |
| 1704 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); |
| 1705 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1706 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
| 1707 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 1708 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
| 1709 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1710 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1711 | /* struct btrfs_dev_extent */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1712 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
| 1713 | chunk_tree, 64); |
| 1714 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, |
| 1715 | chunk_objectid, 64); |
| 1716 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, |
| 1717 | chunk_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1718 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
| 1719 | |
Geert Uytterhoeven | 231e88f | 2013-08-20 13:20:13 +0200 | [diff] [blame] | 1720 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1721 | { |
| 1722 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); |
Geert Uytterhoeven | 231e88f | 2013-08-20 13:20:13 +0200 | [diff] [blame] | 1723 | return (unsigned long)dev + ptr; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1724 | } |
| 1725 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1726 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
| 1727 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, |
| 1728 | generation, 64); |
| 1729 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 1730 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1731 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1732 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1733 | |
| 1734 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
| 1735 | |
| 1736 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, |
| 1737 | struct btrfs_tree_block_info *item, |
| 1738 | struct btrfs_disk_key *key) |
| 1739 | { |
| 1740 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 1741 | } |
| 1742 | |
| 1743 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, |
| 1744 | struct btrfs_tree_block_info *item, |
| 1745 | struct btrfs_disk_key *key) |
| 1746 | { |
| 1747 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 1748 | } |
| 1749 | |
| 1750 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
| 1751 | root, 64); |
| 1752 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, |
| 1753 | objectid, 64); |
| 1754 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, |
| 1755 | offset, 64); |
| 1756 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, |
| 1757 | count, 32); |
| 1758 | |
| 1759 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, |
| 1760 | count, 32); |
| 1761 | |
| 1762 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, |
| 1763 | type, 8); |
| 1764 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, |
| 1765 | offset, 64); |
| 1766 | |
| 1767 | static inline u32 btrfs_extent_inline_ref_size(int type) |
| 1768 | { |
| 1769 | if (type == BTRFS_TREE_BLOCK_REF_KEY || |
| 1770 | type == BTRFS_SHARED_BLOCK_REF_KEY) |
| 1771 | return sizeof(struct btrfs_extent_inline_ref); |
| 1772 | if (type == BTRFS_SHARED_DATA_REF_KEY) |
| 1773 | return sizeof(struct btrfs_shared_data_ref) + |
| 1774 | sizeof(struct btrfs_extent_inline_ref); |
| 1775 | if (type == BTRFS_EXTENT_DATA_REF_KEY) |
| 1776 | return sizeof(struct btrfs_extent_data_ref) + |
| 1777 | offsetof(struct btrfs_extent_inline_ref, offset); |
| 1778 | BUG(); |
| 1779 | return 0; |
| 1780 | } |
| 1781 | |
| 1782 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); |
| 1783 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, |
| 1784 | generation, 64); |
| 1785 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); |
| 1786 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1787 | |
| 1788 | /* struct btrfs_node */ |
| 1789 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 1790 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 1791 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
| 1792 | blockptr, 64); |
| 1793 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, |
| 1794 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1795 | |
| 1796 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1797 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1798 | unsigned long ptr; |
| 1799 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 1800 | sizeof(struct btrfs_key_ptr) * nr; |
| 1801 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1802 | } |
| 1803 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1804 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
| 1805 | int nr, u64 val) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 1806 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1807 | unsigned long ptr; |
| 1808 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 1809 | sizeof(struct btrfs_key_ptr) * nr; |
| 1810 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 1811 | } |
| 1812 | |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 1813 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
| 1814 | { |
| 1815 | unsigned long ptr; |
| 1816 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 1817 | sizeof(struct btrfs_key_ptr) * nr; |
| 1818 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); |
| 1819 | } |
| 1820 | |
| 1821 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, |
| 1822 | int nr, u64 val) |
| 1823 | { |
| 1824 | unsigned long ptr; |
| 1825 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 1826 | sizeof(struct btrfs_key_ptr) * nr; |
| 1827 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); |
| 1828 | } |
| 1829 | |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 1830 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 1831 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1832 | return offsetof(struct btrfs_node, ptrs) + |
| 1833 | sizeof(struct btrfs_key_ptr) * nr; |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 1834 | } |
| 1835 | |
Chris Mason | e644d02 | 2007-11-06 15:09:29 -0500 | [diff] [blame] | 1836 | void btrfs_node_key(struct extent_buffer *eb, |
| 1837 | struct btrfs_disk_key *disk_key, int nr); |
| 1838 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1839 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
| 1840 | struct btrfs_disk_key *disk_key, int nr) |
| 1841 | { |
| 1842 | unsigned long ptr; |
| 1843 | ptr = btrfs_node_key_ptr_offset(nr); |
| 1844 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, |
| 1845 | struct btrfs_key_ptr, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1846 | } |
| 1847 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1848 | /* struct btrfs_item */ |
| 1849 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); |
| 1850 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 1851 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
| 1852 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1853 | |
| 1854 | static inline unsigned long btrfs_item_nr_offset(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1855 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1856 | return offsetof(struct btrfs_leaf, items) + |
| 1857 | sizeof(struct btrfs_item) * nr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1858 | } |
| 1859 | |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 1860 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1861 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1862 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1863 | } |
| 1864 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1865 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
| 1866 | struct btrfs_item *item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1867 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1868 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1869 | } |
| 1870 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1871 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1872 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 1873 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1874 | } |
| 1875 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1876 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1877 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 1878 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1879 | } |
| 1880 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1881 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1882 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 1883 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1884 | } |
| 1885 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1886 | static inline void btrfs_item_key(struct extent_buffer *eb, |
| 1887 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1888 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 1889 | struct btrfs_item *item = btrfs_item_nr(nr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1890 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1891 | } |
| 1892 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1893 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
| 1894 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1895 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 1896 | struct btrfs_item *item = btrfs_item_nr(nr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1897 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1898 | } |
| 1899 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1900 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
| 1901 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1902 | /* |
| 1903 | * struct btrfs_root_ref |
| 1904 | */ |
| 1905 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
| 1906 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); |
| 1907 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); |
| 1908 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1909 | /* struct btrfs_dir_item */ |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 1910 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1911 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
| 1912 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1913 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 1914 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
| 1915 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, |
| 1916 | data_len, 16); |
| 1917 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, |
| 1918 | name_len, 16); |
| 1919 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, |
| 1920 | transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1921 | |
| 1922 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
| 1923 | struct btrfs_dir_item *item, |
| 1924 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1925 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1926 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1927 | } |
| 1928 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1929 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
| 1930 | struct btrfs_dir_item *item, |
| 1931 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1932 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1933 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1934 | } |
| 1935 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1936 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
| 1937 | num_entries, 64); |
| 1938 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, |
| 1939 | num_bitmaps, 64); |
| 1940 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, |
| 1941 | generation, 64); |
| 1942 | |
| 1943 | static inline void btrfs_free_space_key(struct extent_buffer *eb, |
| 1944 | struct btrfs_free_space_header *h, |
| 1945 | struct btrfs_disk_key *key) |
| 1946 | { |
| 1947 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 1948 | } |
| 1949 | |
| 1950 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, |
| 1951 | struct btrfs_free_space_header *h, |
| 1952 | struct btrfs_disk_key *key) |
| 1953 | { |
| 1954 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 1955 | } |
| 1956 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1957 | /* struct btrfs_disk_key */ |
| 1958 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, |
| 1959 | objectid, 64); |
| 1960 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); |
| 1961 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); |
Chris Mason | 1d4f640 | 2007-03-15 15:18:43 -0400 | [diff] [blame] | 1962 | |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1963 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 1964 | const struct btrfs_disk_key *disk) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1965 | { |
| 1966 | cpu->offset = le64_to_cpu(disk->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1967 | cpu->type = disk->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1968 | cpu->objectid = le64_to_cpu(disk->objectid); |
| 1969 | } |
| 1970 | |
| 1971 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 1972 | const struct btrfs_key *cpu) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1973 | { |
| 1974 | disk->offset = cpu_to_le64(cpu->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1975 | disk->type = cpu->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1976 | disk->objectid = cpu_to_le64(cpu->objectid); |
| 1977 | } |
| 1978 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1979 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
| 1980 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1981 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1982 | struct btrfs_disk_key disk_key; |
| 1983 | btrfs_node_key(eb, &disk_key, nr); |
| 1984 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1985 | } |
| 1986 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1987 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
| 1988 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1989 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1990 | struct btrfs_disk_key disk_key; |
| 1991 | btrfs_item_key(eb, &disk_key, nr); |
| 1992 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1993 | } |
| 1994 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1995 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
| 1996 | struct btrfs_dir_item *item, |
| 1997 | struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 1998 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1999 | struct btrfs_disk_key disk_key; |
| 2000 | btrfs_dir_item_key(eb, item, &disk_key); |
| 2001 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2002 | } |
| 2003 | |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2004 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2005 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2006 | return key->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2007 | } |
| 2008 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2009 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2010 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2011 | key->type = val; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2012 | } |
| 2013 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2014 | /* struct btrfs_header */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2015 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2016 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
| 2017 | generation, 64); |
| 2018 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); |
| 2019 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2020 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2021 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2022 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
| 2023 | generation, 64); |
| 2024 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); |
| 2025 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, |
| 2026 | nritems, 32); |
| 2027 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2028 | |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2029 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
| 2030 | { |
| 2031 | return (btrfs_header_flags(eb) & flag) == flag; |
| 2032 | } |
| 2033 | |
| 2034 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) |
| 2035 | { |
| 2036 | u64 flags = btrfs_header_flags(eb); |
| 2037 | btrfs_set_header_flags(eb, flags | flag); |
| 2038 | return (flags & flag) == flag; |
| 2039 | } |
| 2040 | |
| 2041 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) |
| 2042 | { |
| 2043 | u64 flags = btrfs_header_flags(eb); |
| 2044 | btrfs_set_header_flags(eb, flags & ~flag); |
| 2045 | return (flags & flag) == flag; |
| 2046 | } |
| 2047 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2048 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
| 2049 | { |
| 2050 | u64 flags = btrfs_header_flags(eb); |
| 2051 | return flags >> BTRFS_BACKREF_REV_SHIFT; |
| 2052 | } |
| 2053 | |
| 2054 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, |
| 2055 | int rev) |
| 2056 | { |
| 2057 | u64 flags = btrfs_header_flags(eb); |
| 2058 | flags &= ~BTRFS_BACKREF_REV_MASK; |
| 2059 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; |
| 2060 | btrfs_set_header_flags(eb, flags); |
| 2061 | } |
| 2062 | |
Ross Kirk | 0a4e558 | 2013-09-24 10:12:38 +0100 | [diff] [blame] | 2063 | static inline unsigned long btrfs_header_fsid(void) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2064 | { |
Geert Uytterhoeven | fba6aa7 | 2013-08-20 13:20:14 +0200 | [diff] [blame] | 2065 | return offsetof(struct btrfs_header, fsid); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2066 | } |
| 2067 | |
Geert Uytterhoeven | b308bc2 | 2013-08-20 13:20:15 +0200 | [diff] [blame] | 2068 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2069 | { |
Geert Uytterhoeven | b308bc2 | 2013-08-20 13:20:15 +0200 | [diff] [blame] | 2070 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2071 | } |
| 2072 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2073 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2074 | { |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2075 | return btrfs_header_level(eb) == 0; |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2076 | } |
| 2077 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2078 | /* struct btrfs_root_item */ |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2079 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
| 2080 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2081 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2082 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2083 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2084 | |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2085 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
| 2086 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2087 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2088 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2089 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
| 2090 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2091 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2092 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
| 2093 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 2094 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
| 2095 | last_snapshot, 64); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 2096 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
| 2097 | generation_v2, 64); |
| 2098 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, |
| 2099 | ctransid, 64); |
| 2100 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, |
| 2101 | otransid, 64); |
| 2102 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, |
| 2103 | stransid, 64); |
| 2104 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, |
| 2105 | rtransid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2106 | |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 2107 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
| 2108 | { |
Al Viro | 6ed3cf2 | 2012-04-13 11:49:04 -0400 | [diff] [blame] | 2109 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 2110 | } |
| 2111 | |
David Sterba | 521e054 | 2014-04-15 16:41:44 +0200 | [diff] [blame] | 2112 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
| 2113 | { |
| 2114 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; |
| 2115 | } |
| 2116 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 2117 | /* struct btrfs_root_backup */ |
| 2118 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, |
| 2119 | tree_root, 64); |
| 2120 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, |
| 2121 | tree_root_gen, 64); |
| 2122 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, |
| 2123 | tree_root_level, 8); |
| 2124 | |
| 2125 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, |
| 2126 | chunk_root, 64); |
| 2127 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, |
| 2128 | chunk_root_gen, 64); |
| 2129 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, |
| 2130 | chunk_root_level, 8); |
| 2131 | |
| 2132 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, |
| 2133 | extent_root, 64); |
| 2134 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, |
| 2135 | extent_root_gen, 64); |
| 2136 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, |
| 2137 | extent_root_level, 8); |
| 2138 | |
| 2139 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, |
| 2140 | fs_root, 64); |
| 2141 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, |
| 2142 | fs_root_gen, 64); |
| 2143 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, |
| 2144 | fs_root_level, 8); |
| 2145 | |
| 2146 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, |
| 2147 | dev_root, 64); |
| 2148 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, |
| 2149 | dev_root_gen, 64); |
| 2150 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, |
| 2151 | dev_root_level, 8); |
| 2152 | |
| 2153 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, |
| 2154 | csum_root, 64); |
| 2155 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, |
| 2156 | csum_root_gen, 64); |
| 2157 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, |
| 2158 | csum_root_level, 8); |
| 2159 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, |
| 2160 | total_bytes, 64); |
| 2161 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, |
| 2162 | bytes_used, 64); |
| 2163 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, |
| 2164 | num_devices, 64); |
| 2165 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2166 | /* struct btrfs_balance_item */ |
| 2167 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2168 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2169 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
| 2170 | struct btrfs_balance_item *bi, |
| 2171 | struct btrfs_disk_balance_args *ba) |
| 2172 | { |
| 2173 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2174 | } |
| 2175 | |
| 2176 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, |
| 2177 | struct btrfs_balance_item *bi, |
| 2178 | struct btrfs_disk_balance_args *ba) |
| 2179 | { |
| 2180 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2181 | } |
| 2182 | |
| 2183 | static inline void btrfs_balance_meta(struct extent_buffer *eb, |
| 2184 | struct btrfs_balance_item *bi, |
| 2185 | struct btrfs_disk_balance_args *ba) |
| 2186 | { |
| 2187 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2188 | } |
| 2189 | |
| 2190 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, |
| 2191 | struct btrfs_balance_item *bi, |
| 2192 | struct btrfs_disk_balance_args *ba) |
| 2193 | { |
| 2194 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2195 | } |
| 2196 | |
| 2197 | static inline void btrfs_balance_sys(struct extent_buffer *eb, |
| 2198 | struct btrfs_balance_item *bi, |
| 2199 | struct btrfs_disk_balance_args *ba) |
| 2200 | { |
| 2201 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 2202 | } |
| 2203 | |
| 2204 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, |
| 2205 | struct btrfs_balance_item *bi, |
| 2206 | struct btrfs_disk_balance_args *ba) |
| 2207 | { |
| 2208 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 2209 | } |
| 2210 | |
| 2211 | static inline void |
| 2212 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, |
| 2213 | struct btrfs_disk_balance_args *disk) |
| 2214 | { |
| 2215 | memset(cpu, 0, sizeof(*cpu)); |
| 2216 | |
| 2217 | cpu->profiles = le64_to_cpu(disk->profiles); |
| 2218 | cpu->usage = le64_to_cpu(disk->usage); |
| 2219 | cpu->devid = le64_to_cpu(disk->devid); |
| 2220 | cpu->pstart = le64_to_cpu(disk->pstart); |
| 2221 | cpu->pend = le64_to_cpu(disk->pend); |
| 2222 | cpu->vstart = le64_to_cpu(disk->vstart); |
| 2223 | cpu->vend = le64_to_cpu(disk->vend); |
| 2224 | cpu->target = le64_to_cpu(disk->target); |
| 2225 | cpu->flags = le64_to_cpu(disk->flags); |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame] | 2226 | cpu->limit = le64_to_cpu(disk->limit); |
David Sterba | ed0df61 | 2016-11-01 14:21:23 +0100 | [diff] [blame] | 2227 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
| 2228 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2229 | } |
| 2230 | |
| 2231 | static inline void |
| 2232 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, |
| 2233 | struct btrfs_balance_args *cpu) |
| 2234 | { |
| 2235 | memset(disk, 0, sizeof(*disk)); |
| 2236 | |
| 2237 | disk->profiles = cpu_to_le64(cpu->profiles); |
| 2238 | disk->usage = cpu_to_le64(cpu->usage); |
| 2239 | disk->devid = cpu_to_le64(cpu->devid); |
| 2240 | disk->pstart = cpu_to_le64(cpu->pstart); |
| 2241 | disk->pend = cpu_to_le64(cpu->pend); |
| 2242 | disk->vstart = cpu_to_le64(cpu->vstart); |
| 2243 | disk->vend = cpu_to_le64(cpu->vend); |
| 2244 | disk->target = cpu_to_le64(cpu->target); |
| 2245 | disk->flags = cpu_to_le64(cpu->flags); |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame] | 2246 | disk->limit = cpu_to_le64(cpu->limit); |
David Sterba | ed0df61 | 2016-11-01 14:21:23 +0100 | [diff] [blame] | 2247 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
| 2248 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2249 | } |
| 2250 | |
| 2251 | /* struct btrfs_super_block */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2252 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
Chris Mason | a061fc8 | 2008-05-07 11:43:44 -0400 | [diff] [blame] | 2253 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2254 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
| 2255 | generation, 64); |
| 2256 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2257 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
| 2258 | struct btrfs_super_block, sys_chunk_array_size, 32); |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2259 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
| 2260 | struct btrfs_super_block, chunk_root_generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2261 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
| 2262 | root_level, 8); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2263 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
| 2264 | chunk_root, 64); |
| 2265 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2266 | chunk_root_level, 8); |
| 2267 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, |
| 2268 | log_root, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2269 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
| 2270 | log_root_transid, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2271 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
| 2272 | log_root_level, 8); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2273 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
| 2274 | total_bytes, 64); |
| 2275 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, |
| 2276 | bytes_used, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2277 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
| 2278 | sectorsize, 32); |
| 2279 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, |
| 2280 | nodesize, 32); |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 2281 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
| 2282 | stripesize, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2283 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
| 2284 | root_dir_objectid, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2285 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
| 2286 | num_devices, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2287 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
| 2288 | compat_flags, 64); |
| 2289 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, |
Josef Bacik | 1253483 | 2009-12-17 21:32:27 +0000 | [diff] [blame] | 2290 | compat_ro_flags, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2291 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
| 2292 | incompat_flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2293 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
| 2294 | csum_type, 16); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2295 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
| 2296 | cache_generation, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2297 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 2298 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
| 2299 | uuid_tree_generation, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2300 | |
| 2301 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) |
| 2302 | { |
David Sterba | 1104a88 | 2013-03-06 15:57:46 +0100 | [diff] [blame] | 2303 | u16 t = btrfs_super_csum_type(s); |
| 2304 | /* |
| 2305 | * csum type is validated at mount time |
| 2306 | */ |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2307 | return btrfs_csum_sizes[t]; |
| 2308 | } |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2309 | |
| 2310 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2311 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2312 | return offsetof(struct btrfs_leaf, items); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2313 | } |
| 2314 | |
Liu Bo | 851cd17 | 2016-09-23 13:44:44 -0700 | [diff] [blame] | 2315 | /* |
| 2316 | * The leaf data grows from end-to-front in the node. |
| 2317 | * this returns the address of the start of the last item, |
| 2318 | * which is the stop of the leaf data stack |
| 2319 | */ |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2320 | static inline unsigned int leaf_data_end(struct btrfs_fs_info *fs_info, |
Liu Bo | 851cd17 | 2016-09-23 13:44:44 -0700 | [diff] [blame] | 2321 | struct extent_buffer *leaf) |
| 2322 | { |
| 2323 | u32 nr = btrfs_header_nritems(leaf); |
| 2324 | |
| 2325 | if (nr == 0) |
Jeff Mahoney | 0b246af | 2016-06-22 18:54:23 -0400 | [diff] [blame] | 2326 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
Liu Bo | 851cd17 | 2016-09-23 13:44:44 -0700 | [diff] [blame] | 2327 | return btrfs_item_offset_nr(leaf, nr - 1); |
| 2328 | } |
| 2329 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2330 | /* struct btrfs_file_extent_item */ |
| 2331 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2332 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
| 2333 | struct btrfs_file_extent_item, disk_bytenr, 64); |
| 2334 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, |
| 2335 | struct btrfs_file_extent_item, offset, 64); |
| 2336 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, |
| 2337 | struct btrfs_file_extent_item, generation, 64); |
| 2338 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, |
| 2339 | struct btrfs_file_extent_item, num_bytes, 64); |
Josef Bacik | e20d6c5 | 2013-11-13 21:11:49 -0500 | [diff] [blame] | 2340 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
| 2341 | struct btrfs_file_extent_item, disk_num_bytes, 64); |
| 2342 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, |
| 2343 | struct btrfs_file_extent_item, compression, 8); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2344 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2345 | static inline unsigned long |
| 2346 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 2347 | { |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 2348 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 2349 | } |
| 2350 | |
| 2351 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) |
| 2352 | { |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 2353 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 2354 | } |
| 2355 | |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2356 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
| 2357 | disk_bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2358 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
| 2359 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2360 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
| 2361 | disk_num_bytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2362 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
| 2363 | offset, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2364 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
| 2365 | num_bytes, 64); |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2366 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
| 2367 | ram_bytes, 64); |
| 2368 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, |
| 2369 | compression, 8); |
| 2370 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, |
| 2371 | encryption, 8); |
| 2372 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, |
| 2373 | other_encoding, 16); |
| 2374 | |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2375 | /* |
| 2376 | * this returns the number of bytes used by the item on disk, minus the |
| 2377 | * size of any extent headers. If a file is compressed on disk, this is |
| 2378 | * the compressed size |
| 2379 | */ |
| 2380 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, |
| 2381 | struct btrfs_item *e) |
| 2382 | { |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 2383 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2384 | } |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 2385 | |
Chris Mason | 514ac8a | 2014-01-03 21:07:00 -0800 | [diff] [blame] | 2386 | /* this returns the number of file bytes represented by the inline item. |
| 2387 | * If an item is compressed, this is the uncompressed size |
| 2388 | */ |
| 2389 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
| 2390 | int slot, |
| 2391 | struct btrfs_file_extent_item *fi) |
| 2392 | { |
| 2393 | struct btrfs_map_token token; |
| 2394 | |
| 2395 | btrfs_init_map_token(&token); |
| 2396 | /* |
| 2397 | * return the space used on disk if this item isn't |
| 2398 | * compressed or encoded |
| 2399 | */ |
| 2400 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && |
| 2401 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && |
| 2402 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { |
| 2403 | return btrfs_file_extent_inline_item_len(eb, |
| 2404 | btrfs_item_nr(slot)); |
| 2405 | } |
| 2406 | |
| 2407 | /* otherwise use the ram bytes field */ |
| 2408 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); |
| 2409 | } |
| 2410 | |
| 2411 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 2412 | /* btrfs_dev_stats_item */ |
| 2413 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, |
| 2414 | struct btrfs_dev_stats_item *ptr, |
| 2415 | int index) |
| 2416 | { |
| 2417 | u64 val; |
| 2418 | |
| 2419 | read_extent_buffer(eb, &val, |
| 2420 | offsetof(struct btrfs_dev_stats_item, values) + |
| 2421 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 2422 | sizeof(val)); |
| 2423 | return val; |
| 2424 | } |
| 2425 | |
| 2426 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, |
| 2427 | struct btrfs_dev_stats_item *ptr, |
| 2428 | int index, u64 val) |
| 2429 | { |
| 2430 | write_extent_buffer(eb, &val, |
| 2431 | offsetof(struct btrfs_dev_stats_item, values) + |
| 2432 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 2433 | sizeof(val)); |
| 2434 | } |
| 2435 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 2436 | /* btrfs_qgroup_status_item */ |
| 2437 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, |
| 2438 | generation, 64); |
| 2439 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, |
| 2440 | version, 64); |
| 2441 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, |
| 2442 | flags, 64); |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 2443 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
| 2444 | rescan, 64); |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 2445 | |
| 2446 | /* btrfs_qgroup_info_item */ |
| 2447 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, |
| 2448 | generation, 64); |
| 2449 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); |
| 2450 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, |
| 2451 | rfer_cmpr, 64); |
| 2452 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); |
| 2453 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, |
| 2454 | excl_cmpr, 64); |
| 2455 | |
| 2456 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, |
| 2457 | struct btrfs_qgroup_info_item, generation, 64); |
| 2458 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, |
| 2459 | rfer, 64); |
| 2460 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, |
| 2461 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); |
| 2462 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, |
| 2463 | excl, 64); |
| 2464 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, |
| 2465 | struct btrfs_qgroup_info_item, excl_cmpr, 64); |
| 2466 | |
| 2467 | /* btrfs_qgroup_limit_item */ |
| 2468 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, |
| 2469 | flags, 64); |
| 2470 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, |
| 2471 | max_rfer, 64); |
| 2472 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, |
| 2473 | max_excl, 64); |
| 2474 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, |
| 2475 | rsv_rfer, 64); |
| 2476 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, |
| 2477 | rsv_excl, 64); |
| 2478 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 2479 | /* btrfs_dev_replace_item */ |
| 2480 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, |
| 2481 | struct btrfs_dev_replace_item, src_devid, 64); |
| 2482 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, |
| 2483 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, |
| 2484 | 64); |
| 2485 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, |
| 2486 | replace_state, 64); |
| 2487 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, |
| 2488 | time_started, 64); |
| 2489 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, |
| 2490 | time_stopped, 64); |
| 2491 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, |
| 2492 | num_write_errors, 64); |
| 2493 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, |
| 2494 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, |
| 2495 | 64); |
| 2496 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, |
| 2497 | cursor_left, 64); |
| 2498 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, |
| 2499 | cursor_right, 64); |
| 2500 | |
| 2501 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, |
| 2502 | struct btrfs_dev_replace_item, src_devid, 64); |
| 2503 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, |
| 2504 | struct btrfs_dev_replace_item, |
| 2505 | cont_reading_from_srcdev_mode, 64); |
| 2506 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, |
| 2507 | struct btrfs_dev_replace_item, replace_state, 64); |
| 2508 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, |
| 2509 | struct btrfs_dev_replace_item, time_started, 64); |
| 2510 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, |
| 2511 | struct btrfs_dev_replace_item, time_stopped, 64); |
| 2512 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, |
| 2513 | struct btrfs_dev_replace_item, num_write_errors, 64); |
| 2514 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, |
| 2515 | struct btrfs_dev_replace_item, |
| 2516 | num_uncorrectable_read_errors, 64); |
| 2517 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, |
| 2518 | struct btrfs_dev_replace_item, cursor_left, 64); |
| 2519 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, |
| 2520 | struct btrfs_dev_replace_item, cursor_right, 64); |
| 2521 | |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 2522 | /* helper function to cast into the data area of the leaf. */ |
| 2523 | #define btrfs_item_ptr(leaf, slot, type) \ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 2524 | ((type *)(btrfs_leaf_data(leaf) + \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2525 | btrfs_item_offset_nr(leaf, slot))) |
| 2526 | |
| 2527 | #define btrfs_item_ptr_offset(leaf, slot) \ |
| 2528 | ((unsigned long)(btrfs_leaf_data(leaf) + \ |
| 2529 | btrfs_item_offset_nr(leaf, slot))) |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 2530 | |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 2531 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
| 2532 | { |
| 2533 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && |
| 2534 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); |
| 2535 | } |
| 2536 | |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 2537 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
| 2538 | { |
Michal Hocko | c62d255 | 2015-11-06 16:28:49 -0800 | [diff] [blame] | 2539 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 2540 | } |
| 2541 | |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 2542 | /* extent-tree.c */ |
Chris Mason | 28f75a0 | 2015-02-04 06:59:29 -0800 | [diff] [blame] | 2543 | |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2544 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
Chris Mason | 28f75a0 | 2015-02-04 06:59:29 -0800 | [diff] [blame] | 2545 | |
Jeff Mahoney | 27965b6 | 2016-06-16 11:07:27 -0400 | [diff] [blame] | 2546 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
Josef Bacik | 9e0baf6 | 2011-07-15 15:16:44 +0000 | [diff] [blame] | 2547 | unsigned num_items) |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 2548 | { |
Jeff Mahoney | 27965b6 | 2016-06-16 11:07:27 -0400 | [diff] [blame] | 2549 | return fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 2550 | } |
| 2551 | |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 2552 | /* |
| 2553 | * Doing a truncate won't result in new nodes or leaves, just what we need for |
| 2554 | * COW. |
| 2555 | */ |
Jeff Mahoney | 27965b6 | 2016-06-16 11:07:27 -0400 | [diff] [blame] | 2556 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 2557 | unsigned num_items) |
| 2558 | { |
Jeff Mahoney | 27965b6 | 2016-06-16 11:07:27 -0400 | [diff] [blame] | 2559 | return fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 2560 | } |
| 2561 | |
Josef Bacik | 1be41b7 | 2013-06-12 13:56:06 -0400 | [diff] [blame] | 2562 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2563 | struct btrfs_fs_info *fs_info); |
Josef Bacik | 0a2b2a8 | 2014-01-23 10:54:11 -0500 | [diff] [blame] | 2564 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2565 | struct btrfs_fs_info *fs_info); |
Filipe Manana | 9cfa3e3 | 2016-04-26 15:39:32 +0100 | [diff] [blame] | 2566 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
| 2567 | const u64 start); |
| 2568 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); |
Filipe Manana | f78c436 | 2016-05-09 13:15:41 +0100 | [diff] [blame] | 2569 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
| 2570 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
| 2571 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 2572 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 2573 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2574 | struct btrfs_fs_info *fs_info, unsigned long count); |
| 2575 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, |
Josef Bacik | 31b9655 | 2016-04-11 17:37:40 -0400 | [diff] [blame] | 2576 | unsigned long count, u64 transid, int wait); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2577 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 2578 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2579 | struct btrfs_fs_info *fs_info, u64 bytenr, |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 2580 | u64 offset, int metadata, u64 *refs, u64 *flags); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2581 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 2582 | u64 bytenr, u64 num, int reserved); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2583 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 2584 | u64 bytenr, u64 num_bytes); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2585 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
Josef Bacik | 8c2a1a3 | 2013-06-06 13:19:32 -0400 | [diff] [blame] | 2586 | struct extent_buffer *eb); |
Liu Bo | e4c3b2d | 2017-01-30 12:25:28 -0800 | [diff] [blame] | 2587 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2588 | u64 objectid, u64 offset, u64 bytenr); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2589 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
| 2590 | struct btrfs_fs_info *info, |
| 2591 | u64 bytenr); |
Filipe Manana | 758f2df | 2015-11-19 11:45:48 +0000 | [diff] [blame] | 2592 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2593 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 2594 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
David Sterba | 4d75f8a | 2014-06-15 01:54:12 +0200 | [diff] [blame] | 2595 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2596 | struct btrfs_root *root, |
| 2597 | u64 parent, u64 root_objectid, |
| 2598 | const struct btrfs_disk_key *key, |
| 2599 | int level, u64 hint, |
| 2600 | u64 empty_size); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 2601 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
| 2602 | struct btrfs_root *root, |
| 2603 | struct extent_buffer *buf, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 2604 | u64 parent, int last_ref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2605 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2606 | u64 root_objectid, u64 owner, |
Qu Wenruo | 5846a3c | 2015-10-26 14:11:18 +0800 | [diff] [blame] | 2607 | u64 offset, u64 ram_bytes, |
| 2608 | struct btrfs_key *ins); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2609 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2610 | struct btrfs_fs_info *fs_info, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2611 | u64 root_objectid, u64 owner, u64 offset, |
| 2612 | struct btrfs_key *ins); |
Wang Xiaoguang | 1851309 | 2016-07-25 15:51:40 +0800 | [diff] [blame] | 2613 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
Josef Bacik | 0036158 | 2013-08-14 14:02:47 -0400 | [diff] [blame] | 2614 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 2615 | struct btrfs_key *ins, int is_data, int delalloc); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 2616 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Josef Bacik | e339a6b | 2014-07-02 10:54:25 -0700 | [diff] [blame] | 2617 | struct extent_buffer *buf, int full_backref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2618 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Josef Bacik | e339a6b | 2014-07-02 10:54:25 -0700 | [diff] [blame] | 2619 | struct extent_buffer *buf, int full_backref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2620 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2621 | struct btrfs_fs_info *fs_info, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2622 | u64 bytenr, u64 num_bytes, u64 flags, |
Josef Bacik | b1c79e0 | 2013-05-09 13:49:30 -0400 | [diff] [blame] | 2623 | int level, int is_data); |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 2624 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2625 | struct btrfs_fs_info *fs_info, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 2626 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
Filipe Manana | b06c4bf | 2015-10-23 07:52:54 +0100 | [diff] [blame] | 2627 | u64 owner, u64 offset); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2628 | |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2629 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
| 2630 | u64 start, u64 len, int delalloc); |
| 2631 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 2632 | u64 start, u64 len); |
David Sterba | 8b74c03 | 2017-02-10 19:20:56 +0100 | [diff] [blame] | 2633 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
Chris Mason | ccd467d | 2007-06-28 15:57:36 -0400 | [diff] [blame] | 2634 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2635 | struct btrfs_fs_info *fs_info); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 2636 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2637 | struct btrfs_fs_info *fs_info, |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 2638 | u64 bytenr, u64 num_bytes, u64 parent, |
Filipe Manana | b06c4bf | 2015-10-23 07:52:54 +0100 | [diff] [blame] | 2639 | u64 root_objectid, u64 owner, u64 offset); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2640 | |
Chris Mason | 1bbc621 | 2015-04-06 12:46:08 -0700 | [diff] [blame] | 2641 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2642 | struct btrfs_fs_info *fs_info); |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2643 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2644 | struct btrfs_fs_info *fs_info); |
Josef Bacik | dcdf7f6 | 2015-03-02 16:37:31 -0500 | [diff] [blame] | 2645 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2646 | struct btrfs_fs_info *fs_info); |
| 2647 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2648 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
Jeff Mahoney | 5b4aace | 2016-06-21 10:40:19 -0400 | [diff] [blame] | 2649 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2650 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2651 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2652 | struct btrfs_fs_info *fs_info, u64 bytes_used, |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2653 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2654 | u64 size); |
Filipe Manana | 8eab77f | 2015-11-13 23:57:16 +0000 | [diff] [blame] | 2655 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
Filipe Manana | 7fd0118 | 2015-11-13 23:57:17 +0000 | [diff] [blame] | 2656 | struct btrfs_fs_info *fs_info, |
| 2657 | const u64 chunk_offset); |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 2658 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2659 | struct btrfs_fs_info *fs_info, u64 group_start, |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 2660 | struct extent_map *em); |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 2661 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
Jeff Mahoney | e33e17e | 2015-06-15 09:41:19 -0400 | [diff] [blame] | 2662 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
| 2663 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 2664 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2665 | struct btrfs_fs_info *fs_info); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 2666 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 2667 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 2668 | |
| 2669 | enum btrfs_reserve_flush_enum { |
| 2670 | /* If we are in the transaction, we can't flush anything.*/ |
| 2671 | BTRFS_RESERVE_NO_FLUSH, |
| 2672 | /* |
| 2673 | * Flushing delalloc may cause deadlock somewhere, in this |
| 2674 | * case, use FLUSH LIMIT |
| 2675 | */ |
| 2676 | BTRFS_RESERVE_FLUSH_LIMIT, |
| 2677 | BTRFS_RESERVE_FLUSH_ALL, |
| 2678 | }; |
| 2679 | |
Josef Bacik | f376df2 | 2016-03-25 13:25:56 -0400 | [diff] [blame] | 2680 | enum btrfs_flush_state { |
| 2681 | FLUSH_DELAYED_ITEMS_NR = 1, |
| 2682 | FLUSH_DELAYED_ITEMS = 2, |
| 2683 | FLUSH_DELALLOC = 3, |
| 2684 | FLUSH_DELALLOC_WAIT = 4, |
| 2685 | ALLOC_CHUNK = 5, |
| 2686 | COMMIT_TRANS = 6, |
| 2687 | }; |
| 2688 | |
Qu Wenruo | 7cf5b97 | 2015-09-08 17:25:55 +0800 | [diff] [blame] | 2689 | int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); |
Qu Wenruo | 4ceff07 | 2015-09-08 17:22:42 +0800 | [diff] [blame] | 2690 | int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes); |
Qu Wenruo | 7cf5b97 | 2015-09-08 17:25:55 +0800 | [diff] [blame] | 2691 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
Qu Wenruo | 51773be | 2015-10-08 18:19:37 +0800 | [diff] [blame] | 2692 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
| 2693 | u64 len); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 2694 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2695 | struct btrfs_fs_info *fs_info); |
Filipe Manana | 4fbcdf6 | 2015-05-20 14:01:54 +0100 | [diff] [blame] | 2696 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 2697 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
| 2698 | struct inode *inode); |
| 2699 | void btrfs_orphan_release_metadata(struct inode *inode); |
Miao Xie | d5c1207 | 2013-02-28 10:04:33 +0000 | [diff] [blame] | 2700 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
| 2701 | struct btrfs_block_rsv *rsv, |
| 2702 | int nitems, |
Jeff Mahoney | ee3441b | 2013-07-09 16:37:21 -0400 | [diff] [blame] | 2703 | u64 *qgroup_reserved, bool use_global_rsv); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2704 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
David Sterba | 7775c81 | 2017-02-10 19:18:18 +0100 | [diff] [blame] | 2705 | struct btrfs_block_rsv *rsv); |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 2706 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
| 2707 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); |
Qu Wenruo | 7cf5b97 | 2015-09-08 17:25:55 +0800 | [diff] [blame] | 2708 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); |
| 2709 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 2710 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2711 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 2712 | unsigned short type); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2713 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 2714 | struct btrfs_block_rsv *rsv); |
Chris Mason | cdfb080 | 2015-04-06 18:17:00 -0700 | [diff] [blame] | 2715 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 2716 | int btrfs_block_rsv_add(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 2717 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
| 2718 | enum btrfs_reserve_flush_enum flush); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2719 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
Josef Bacik | 36ba022 | 2011-10-18 12:15:48 -0400 | [diff] [blame] | 2720 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 2721 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
| 2722 | enum btrfs_reserve_flush_enum flush); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 2723 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
Josef Bacik | 25d609f | 2016-03-25 13:25:48 -0400 | [diff] [blame] | 2724 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
| 2725 | int update_size); |
Josef Bacik | d52be81 | 2013-05-29 14:54:47 -0400 | [diff] [blame] | 2726 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
| 2727 | struct btrfs_block_rsv *dest, u64 num_bytes, |
| 2728 | int min_factor); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2729 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 2730 | struct btrfs_block_rsv *block_rsv, |
| 2731 | u64 num_bytes); |
Jeff Mahoney | 5e00f19 | 2017-02-15 16:28:29 -0500 | [diff] [blame] | 2732 | int btrfs_inc_block_group_ro(struct btrfs_fs_info *fs_info, |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 2733 | struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2734 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2735 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 2736 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2737 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 2738 | u64 start, u64 end); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2739 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
Filipe Manana | 1edb647b | 2014-12-08 14:01:12 +0000 | [diff] [blame] | 2740 | u64 num_bytes, u64 *actual_bytes); |
Chris Mason | c87f08c | 2011-02-16 13:57:04 -0500 | [diff] [blame] | 2741 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2742 | struct btrfs_fs_info *fs_info, u64 type); |
| 2743 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 2744 | |
liubo | c59021f | 2011-03-07 02:13:14 +0000 | [diff] [blame] | 2745 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 2746 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
| 2747 | struct btrfs_fs_info *fs_info); |
Liu Bo | 31e5022 | 2012-11-21 14:18:10 +0000 | [diff] [blame] | 2748 | int __get_raid_index(u64 flags); |
Filipe Manana | 9ea24bb | 2014-10-29 11:57:59 +0000 | [diff] [blame] | 2749 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
| 2750 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); |
Zhao Lei | 0bc19f90 | 2016-01-06 18:56:36 +0800 | [diff] [blame] | 2751 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
Filipe Manana | 39c2d7f | 2015-05-20 14:01:55 +0100 | [diff] [blame] | 2752 | void check_system_chunk(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2753 | struct btrfs_fs_info *fs_info, const u64 type); |
Omar Sandoval | a5ed918 | 2015-09-29 20:50:35 -0700 | [diff] [blame] | 2754 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
| 2755 | struct btrfs_fs_info *info, u64 start, u64 end); |
| 2756 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 2757 | /* ctree.c */ |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2758 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2759 | int level, int *slot); |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2760 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2761 | int btrfs_previous_item(struct btrfs_root *root, |
| 2762 | struct btrfs_path *path, u64 min_objectid, |
| 2763 | int type); |
Wang Shilong | ade2e0b | 2014-01-12 21:38:33 +0800 | [diff] [blame] | 2764 | int btrfs_previous_extent_item(struct btrfs_root *root, |
| 2765 | struct btrfs_path *path, u64 min_objectid); |
Daniel Dressler | b7a0365 | 2014-11-12 13:43:09 +0900 | [diff] [blame] | 2766 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
| 2767 | struct btrfs_path *path, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2768 | const struct btrfs_key *new_key); |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 2769 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
| 2770 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); |
Chris Mason | e7a8456 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 2771 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 2772 | struct btrfs_key *key, int lowest_level, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 2773 | u64 min_trans); |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 2774 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 2775 | struct btrfs_path *path, |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 2776 | u64 min_trans); |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 2777 | enum btrfs_compare_tree_result { |
| 2778 | BTRFS_COMPARE_TREE_NEW, |
| 2779 | BTRFS_COMPARE_TREE_DELETED, |
| 2780 | BTRFS_COMPARE_TREE_CHANGED, |
Josef Bacik | ba5e8f2 | 2013-08-16 16:52:55 -0400 | [diff] [blame] | 2781 | BTRFS_COMPARE_TREE_SAME, |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 2782 | }; |
| 2783 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, |
| 2784 | struct btrfs_root *right_root, |
| 2785 | struct btrfs_path *left_path, |
| 2786 | struct btrfs_path *right_path, |
| 2787 | struct btrfs_key *key, |
| 2788 | enum btrfs_compare_tree_result result, |
| 2789 | void *ctx); |
| 2790 | int btrfs_compare_trees(struct btrfs_root *left_root, |
| 2791 | struct btrfs_root *right_root, |
| 2792 | btrfs_changed_cb_t cb, void *ctx); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2793 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
| 2794 | struct btrfs_root *root, struct extent_buffer *buf, |
| 2795 | struct extent_buffer *parent, int parent_slot, |
Chris Mason | 9fa8cfe | 2009-03-13 10:24:59 -0400 | [diff] [blame] | 2796 | struct extent_buffer **cow_ret); |
Chris Mason | be20aa9 | 2007-12-17 20:14:01 -0500 | [diff] [blame] | 2797 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
| 2798 | struct btrfs_root *root, |
| 2799 | struct extent_buffer *buf, |
| 2800 | struct extent_buffer **cow_ret, u64 new_root_objectid); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2801 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
| 2802 | struct extent_buffer *buf); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2803 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 2804 | u32 data_size); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2805 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
| 2806 | struct btrfs_path *path, u32 new_size, int from_end); |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 2807 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
| 2808 | struct btrfs_root *root, |
| 2809 | struct btrfs_path *path, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2810 | const struct btrfs_key *new_key, |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 2811 | unsigned long split_offset); |
Yan, Zheng | ad48fd75 | 2009-11-12 09:33:58 +0000 | [diff] [blame] | 2812 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
| 2813 | struct btrfs_root *root, |
| 2814 | struct btrfs_path *path, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2815 | const struct btrfs_key *new_key); |
Kelley Nielsen | e33d5c3 | 2013-11-04 19:33:33 -0800 | [diff] [blame] | 2816 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
| 2817 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2818 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 2819 | const struct btrfs_key *key, struct btrfs_path *p, |
| 2820 | int ins_len, int cow); |
| 2821 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, |
Jan Schmidt | 5d9e75c4 | 2012-05-16 18:25:47 +0200 | [diff] [blame] | 2822 | struct btrfs_path *p, u64 time_seq); |
Arne Jansen | 2f38b3e | 2011-09-13 11:18:10 +0200 | [diff] [blame] | 2823 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2824 | const struct btrfs_key *key, |
| 2825 | struct btrfs_path *p, int find_higher, |
| 2826 | int return_any); |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 2827 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2828 | struct btrfs_root *root, struct extent_buffer *parent, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 2829 | int start_slot, u64 *last_ret, |
Chris Mason | a6b6e75 | 2007-10-15 16:22:39 -0400 | [diff] [blame] | 2830 | struct btrfs_key *progress); |
David Sterba | b3b4aa7 | 2011-04-21 01:20:15 +0200 | [diff] [blame] | 2831 | void btrfs_release_path(struct btrfs_path *p); |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 2832 | struct btrfs_path *btrfs_alloc_path(void); |
| 2833 | void btrfs_free_path(struct btrfs_path *p); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 2834 | void btrfs_set_path_blocking(struct btrfs_path *p); |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 2835 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
Chris Mason | bd68151 | 2011-07-16 15:23:14 -0400 | [diff] [blame] | 2836 | struct extent_buffer *held, int held_rw); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 2837 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
| 2838 | |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 2839 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 2840 | struct btrfs_path *path, int slot, int nr); |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 2841 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
| 2842 | struct btrfs_root *root, |
| 2843 | struct btrfs_path *path) |
| 2844 | { |
| 2845 | return btrfs_del_items(trans, root, path, path->slots[0], 1); |
| 2846 | } |
| 2847 | |
Tsutomu Itoh | afe5fea | 2013-04-16 05:18:22 +0000 | [diff] [blame] | 2848 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2849 | const struct btrfs_key *cpu_key, u32 *data_size, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 2850 | u32 total_data, u32 total_size, int nr); |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2851 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 2852 | const struct btrfs_key *key, void *data, u32 data_size); |
Chris Mason | 9c58309 | 2008-01-29 15:15:18 -0500 | [diff] [blame] | 2853 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
| 2854 | struct btrfs_root *root, |
| 2855 | struct btrfs_path *path, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2856 | const struct btrfs_key *cpu_key, u32 *data_size, |
| 2857 | int nr); |
Chris Mason | 9c58309 | 2008-01-29 15:15:18 -0500 | [diff] [blame] | 2858 | |
| 2859 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, |
| 2860 | struct btrfs_root *root, |
| 2861 | struct btrfs_path *path, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2862 | const struct btrfs_key *key, |
Chris Mason | 9c58309 | 2008-01-29 15:15:18 -0500 | [diff] [blame] | 2863 | u32 data_size) |
| 2864 | { |
| 2865 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); |
| 2866 | } |
| 2867 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 2868 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 2869 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Jan Schmidt | 3d7806e | 2012-06-11 08:29:29 +0200 | [diff] [blame] | 2870 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
| 2871 | u64 time_seq); |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 2872 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
| 2873 | struct btrfs_path *p, u64 time_seq) |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 2874 | { |
| 2875 | ++p->slots[0]; |
| 2876 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 2877 | return btrfs_next_old_leaf(root, p, time_seq); |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 2878 | return 0; |
| 2879 | } |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 2880 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
| 2881 | { |
| 2882 | return btrfs_next_old_item(root, p, 0); |
| 2883 | } |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2884 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
| 2885 | struct extent_buffer *leaf); |
Jeff Mahoney | 2c53679 | 2011-10-03 23:22:41 -0400 | [diff] [blame] | 2886 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
| 2887 | struct btrfs_block_rsv *block_rsv, |
| 2888 | int update_ref, int for_reloc); |
Yan Zheng | f82d02d | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2889 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
| 2890 | struct btrfs_root *root, |
| 2891 | struct extent_buffer *node, |
| 2892 | struct extent_buffer *parent); |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 2893 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
| 2894 | { |
| 2895 | /* |
Josef Bacik | afcdd12 | 2016-09-02 15:40:02 -0400 | [diff] [blame] | 2896 | * Do it this way so we only ever do one test_bit in the normal case. |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 2897 | */ |
Josef Bacik | afcdd12 | 2016-09-02 15:40:02 -0400 | [diff] [blame] | 2898 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
| 2899 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) |
| 2900 | return 2; |
| 2901 | return 1; |
| 2902 | } |
| 2903 | return 0; |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 2904 | } |
Miao Xie | babbf170 | 2013-05-14 10:20:43 +0000 | [diff] [blame] | 2905 | |
| 2906 | /* |
| 2907 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do |
| 2908 | * anything except sleeping. This function is used to check the status of |
| 2909 | * the fs. |
| 2910 | */ |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2911 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
Miao Xie | babbf170 | 2013-05-14 10:20:43 +0000 | [diff] [blame] | 2912 | { |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 2913 | return fs_info->sb->s_flags & MS_RDONLY || btrfs_fs_closing(fs_info); |
Miao Xie | babbf170 | 2013-05-14 10:20:43 +0000 | [diff] [blame] | 2914 | } |
| 2915 | |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 2916 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
| 2917 | { |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 2918 | kfree(fs_info->balance_ctl); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 2919 | kfree(fs_info->delayed_root); |
| 2920 | kfree(fs_info->extent_root); |
| 2921 | kfree(fs_info->tree_root); |
| 2922 | kfree(fs_info->chunk_root); |
| 2923 | kfree(fs_info->dev_root); |
| 2924 | kfree(fs_info->csum_root); |
Arne Jansen | bcef60f | 2011-09-13 15:23:30 +0200 | [diff] [blame] | 2925 | kfree(fs_info->quota_root); |
Filipe David Borba Manana | d8f9803 | 2013-08-24 19:51:06 +0100 | [diff] [blame] | 2926 | kfree(fs_info->uuid_root); |
Omar Sandoval | 70f6d82 | 2015-09-29 20:50:38 -0700 | [diff] [blame] | 2927 | kfree(fs_info->free_space_root); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 2928 | kfree(fs_info->super_copy); |
| 2929 | kfree(fs_info->super_for_commit); |
Qu Wenruo | f667aef | 2014-09-23 13:40:08 +0800 | [diff] [blame] | 2930 | security_free_mnt_opts(&fs_info->security_opts); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 2931 | kfree(fs_info); |
| 2932 | } |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 2933 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 2934 | /* tree mod log functions from ctree.c */ |
| 2935 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 2936 | struct seq_list *elem); |
| 2937 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 2938 | struct seq_list *elem); |
Jan Schmidt | 5b6602e | 2012-10-23 11:28:27 +0200 | [diff] [blame] | 2939 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 2940 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 2941 | /* root-item.c */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2942 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2943 | struct btrfs_fs_info *fs_info, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 2944 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
| 2945 | const char *name, int name_len); |
| 2946 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2947 | struct btrfs_fs_info *fs_info, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 2948 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2949 | const char *name, int name_len); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 2950 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2951 | const struct btrfs_key *key); |
| 2952 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 2953 | const struct btrfs_key *key, |
| 2954 | struct btrfs_root_item *item); |
Jeff Mahoney | b45a9d8 | 2011-10-03 23:22:44 -0400 | [diff] [blame] | 2955 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
| 2956 | struct btrfs_root *root, |
| 2957 | struct btrfs_key *key, |
| 2958 | struct btrfs_root_item *item); |
Omar Sandoval | 310712b | 2017-01-17 23:24:37 -0800 | [diff] [blame] | 2959 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
Miao Xie | cb517ea | 2013-05-15 07:48:19 +0000 | [diff] [blame] | 2960 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
| 2961 | struct btrfs_key *root_key); |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2962 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
Mark Fasheh | bf5f32e | 2011-07-14 21:23:06 +0000 | [diff] [blame] | 2963 | void btrfs_set_root_node(struct btrfs_root_item *item, |
| 2964 | struct extent_buffer *node); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 2965 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 2966 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
| 2967 | struct btrfs_root *root); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 2968 | |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 2969 | /* uuid-tree.c */ |
| 2970 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2971 | struct btrfs_fs_info *fs_info, u8 *uuid, u8 type, |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 2972 | u64 subid); |
| 2973 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 2974 | struct btrfs_fs_info *fs_info, u8 *uuid, u8 type, |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 2975 | u64 subid); |
Stefan Behrens | 70f8017 | 2013-08-15 17:11:23 +0200 | [diff] [blame] | 2976 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
| 2977 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, |
| 2978 | u64)); |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 2979 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 2980 | /* dir-item.c */ |
Chris Mason | 9c52057 | 2012-12-17 14:26:57 -0500 | [diff] [blame] | 2981 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
| 2982 | const char *name, int name_len); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2983 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
| 2984 | struct btrfs_root *root, const char *name, |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 2985 | int name_len, struct inode *dir, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 2986 | struct btrfs_key *location, u8 type, u64 index); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 2987 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
| 2988 | struct btrfs_root *root, |
| 2989 | struct btrfs_path *path, u64 dir, |
| 2990 | const char *name, int name_len, |
| 2991 | int mod); |
| 2992 | struct btrfs_dir_item * |
| 2993 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, |
| 2994 | struct btrfs_root *root, |
| 2995 | struct btrfs_path *path, u64 dir, |
| 2996 | u64 objectid, const char *name, int name_len, |
| 2997 | int mod); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 2998 | struct btrfs_dir_item * |
| 2999 | btrfs_search_dir_index_item(struct btrfs_root *root, |
| 3000 | struct btrfs_path *path, u64 dirid, |
| 3001 | const char *name, int name_len); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3002 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
| 3003 | struct btrfs_root *root, |
| 3004 | struct btrfs_path *path, |
| 3005 | struct btrfs_dir_item *di); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3006 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 3007 | struct btrfs_root *root, |
| 3008 | struct btrfs_path *path, u64 objectid, |
| 3009 | const char *name, u16 name_len, |
| 3010 | const void *data, u16 data_len); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3011 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
| 3012 | struct btrfs_root *root, |
| 3013 | struct btrfs_path *path, u64 dir, |
| 3014 | const char *name, u16 name_len, |
| 3015 | int mod); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3016 | int verify_dir_item(struct btrfs_fs_info *fs_info, |
Josef Bacik | 22a94d4 | 2011-03-16 16:47:17 -0400 | [diff] [blame] | 3017 | struct extent_buffer *leaf, |
| 3018 | struct btrfs_dir_item *dir_item); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3019 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
Filipe Manana | 5f5bc6b | 2014-11-09 08:38:39 +0000 | [diff] [blame] | 3020 | struct btrfs_path *path, |
| 3021 | const char *name, |
| 3022 | int name_len); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3023 | |
| 3024 | /* orphan.c */ |
| 3025 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, |
| 3026 | struct btrfs_root *root, u64 offset); |
| 3027 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, |
| 3028 | struct btrfs_root *root, u64 offset); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3029 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3030 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3031 | /* inode-item.c */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3032 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
| 3033 | struct btrfs_root *root, |
| 3034 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3035 | u64 inode_objectid, u64 ref_objectid, u64 index); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3036 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
| 3037 | struct btrfs_root *root, |
| 3038 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3039 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3040 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
| 3041 | struct btrfs_root *root, |
| 3042 | struct btrfs_path *path, u64 objectid); |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 3043 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 3044 | *root, struct btrfs_path *path, |
| 3045 | struct btrfs_key *location, int mod); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3046 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 3047 | struct btrfs_inode_extref * |
| 3048 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, |
| 3049 | struct btrfs_root *root, |
| 3050 | struct btrfs_path *path, |
| 3051 | const char *name, int name_len, |
| 3052 | u64 inode_objectid, u64 ref_objectid, int ins_len, |
| 3053 | int cow); |
| 3054 | |
| 3055 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, |
| 3056 | u64 ref_objectid, const char *name, |
| 3057 | int name_len, |
| 3058 | struct btrfs_inode_extref **extref_ret); |
| 3059 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3060 | /* file-item.c */ |
Miao Xie | facc8a22 | 2013-07-25 19:22:34 +0800 | [diff] [blame] | 3061 | struct btrfs_dio_private; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3062 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 5b4aace | 2016-06-21 10:40:19 -0400 | [diff] [blame] | 3063 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3064 | int btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
| 3065 | int btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, |
| 3066 | u64 logical_offset); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3067 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3068 | struct btrfs_root *root, |
| 3069 | u64 objectid, u64 pos, |
| 3070 | u64 disk_offset, u64 disk_num_bytes, |
| 3071 | u64 num_bytes, u64 offset, u64 ram_bytes, |
| 3072 | u8 compression, u8 encryption, u16 other_encoding); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3073 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
| 3074 | struct btrfs_root *root, |
| 3075 | struct btrfs_path *path, u64 objectid, |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3076 | u64 bytenr, int mod); |
Chris Mason | 065631f | 2008-02-20 12:07:25 -0500 | [diff] [blame] | 3077 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3078 | struct btrfs_root *root, |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 3079 | struct btrfs_ordered_sum *sums); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3080 | int btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
| 3081 | u64 file_start, int contig); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3082 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
| 3083 | struct list_head *list, int search_commit); |
Filipe Manana | 7ffbb59 | 2014-06-09 03:48:05 +0100 | [diff] [blame] | 3084 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
| 3085 | const struct btrfs_path *path, |
| 3086 | struct btrfs_file_extent_item *fi, |
| 3087 | const bool new_inline, |
| 3088 | struct extent_map *em); |
| 3089 | |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3090 | /* inode.c */ |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 3091 | struct btrfs_delalloc_work { |
| 3092 | struct inode *inode; |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 3093 | int delay_iput; |
| 3094 | struct completion completion; |
| 3095 | struct list_head list; |
| 3096 | struct btrfs_work work; |
| 3097 | }; |
| 3098 | |
| 3099 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, |
David Sterba | 651d494 | 2015-11-27 19:24:16 +0100 | [diff] [blame] | 3100 | int delay_iput); |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 3101 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
| 3102 | |
Josef Bacik | b267515 | 2011-07-18 13:21:36 -0400 | [diff] [blame] | 3103 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
| 3104 | size_t pg_offset, u64 start, u64 len, |
| 3105 | int create); |
Josef Bacik | 0036158 | 2013-08-14 14:02:47 -0400 | [diff] [blame] | 3106 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
Josef Bacik | 7ee9e44 | 2013-06-21 16:37:03 -0400 | [diff] [blame] | 3107 | u64 *orig_start, u64 *orig_block_len, |
| 3108 | u64 *ram_bytes); |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3109 | |
| 3110 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ |
Eric Sandeen | 5036f53 | 2008-08-07 11:19:42 -0400 | [diff] [blame] | 3111 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3112 | #define ClearPageChecked ClearPageFsMisc |
| 3113 | #define SetPageChecked SetPageFsMisc |
| 3114 | #define PageChecked PageFsMisc |
| 3115 | #endif |
| 3116 | |
Li Zefan | b6973aa | 2011-07-20 03:46:35 +0000 | [diff] [blame] | 3117 | /* This forces readahead on a given range of bytes in an inode */ |
| 3118 | static inline void btrfs_force_ra(struct address_space *mapping, |
| 3119 | struct file_ra_state *ra, struct file *file, |
| 3120 | pgoff_t offset, unsigned long req_size) |
| 3121 | { |
| 3122 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); |
| 3123 | } |
| 3124 | |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 3125 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
| 3126 | int btrfs_set_inode_index(struct inode *dir, u64 *index); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3127 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
| 3128 | struct btrfs_root *root, |
Nikolay Borisov | 4ec5934 | 2017-01-18 00:31:44 +0200 | [diff] [blame] | 3129 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3130 | const char *name, int name_len); |
| 3131 | int btrfs_add_link(struct btrfs_trans_handle *trans, |
| 3132 | struct inode *parent_inode, struct inode *inode, |
| 3133 | const char *name, int name_len, int add_backref, u64 index); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3134 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
| 3135 | struct btrfs_root *root, |
| 3136 | struct inode *dir, u64 objectid, |
| 3137 | const char *name, int name_len); |
Chandan Rajendra | 9703fef | 2016-01-21 15:55:56 +0530 | [diff] [blame] | 3138 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
Josef Bacik | 2aaa665 | 2012-08-29 14:27:18 -0400 | [diff] [blame] | 3139 | int front); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3140 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
| 3141 | struct btrfs_root *root, |
| 3142 | struct inode *inode, u64 new_size, |
| 3143 | u32 min_type); |
| 3144 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3145 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
Miao Xie | 6c255e6 | 2014-03-06 13:55:01 +0800 | [diff] [blame] | 3146 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
| 3147 | int nr); |
Josef Bacik | 2ac55d4 | 2010-02-03 19:33:23 +0000 | [diff] [blame] | 3148 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
Qu Wenruo | ba8b04c | 2016-07-19 16:50:36 +0800 | [diff] [blame] | 3149 | struct extent_state **cached_state, int dedupe); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3150 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
Filipe David Borba Manana | 6354192 | 2014-01-07 11:47:46 +0000 | [diff] [blame] | 3151 | struct btrfs_root *new_root, |
| 3152 | struct btrfs_root *parent_root, |
| 3153 | u64 new_dirid); |
Mike Christie | 81a75f6 | 2016-06-05 14:31:54 -0500 | [diff] [blame] | 3154 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
David Woodhouse | 64a1670 | 2009-07-15 23:29:37 +0100 | [diff] [blame] | 3155 | size_t size, struct bio *bio, |
| 3156 | unsigned long bio_flags); |
Dave Jiang | 11bac80 | 2017-02-24 14:56:41 -0800 | [diff] [blame] | 3157 | int btrfs_page_mkwrite(struct vm_fault *vmf); |
Chris Mason | 9ebefb18 | 2007-06-15 13:50:00 -0400 | [diff] [blame] | 3158 | int btrfs_readpage(struct file *file, struct page *page); |
Al Viro | bd55597 | 2010-06-07 11:35:40 -0400 | [diff] [blame] | 3159 | void btrfs_evict_inode(struct inode *inode); |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 3160 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3161 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
| 3162 | void btrfs_destroy_inode(struct inode *inode); |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 3163 | int btrfs_drop_inode(struct inode *inode); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3164 | int btrfs_init_cachep(void); |
| 3165 | void btrfs_destroy_cachep(void); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3166 | long btrfs_ioctl_trans_end(struct file *file); |
Balaji Rao | 1a54ef8 | 2008-07-21 02:01:04 +0530 | [diff] [blame] | 3167 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
Josef Bacik | 73f7341 | 2009-12-04 17:38:27 +0000 | [diff] [blame] | 3168 | struct btrfs_root *root, int *was_new); |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3169 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
David Sterba | 306e16c | 2011-04-19 14:29:38 +0200 | [diff] [blame] | 3170 | size_t pg_offset, u64 start, u64 end, |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3171 | int create); |
| 3172 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
| 3173 | struct btrfs_root *root, |
| 3174 | struct inode *inode); |
Josef Bacik | be6aef6 | 2012-10-22 15:43:12 -0400 | [diff] [blame] | 3175 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
| 3176 | struct btrfs_root *root, struct inode *inode); |
Zheng Yan | 5b21f2e | 2008-09-26 10:05:38 -0400 | [diff] [blame] | 3177 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
Josef Bacik | 66b4ffd | 2011-01-31 16:22:42 -0500 | [diff] [blame] | 3178 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3179 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
| 3180 | struct btrfs_root *root); |
Josef Bacik | a41ad39 | 2011-01-31 15:30:16 -0500 | [diff] [blame] | 3181 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3182 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3183 | void btrfs_add_delayed_iput(struct inode *inode); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3184 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
Yan, Zheng | efa5646 | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 3185 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
| 3186 | u64 start, u64 num_bytes, u64 min_size, |
| 3187 | loff_t actual_len, u64 *alloc_hint); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3188 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
| 3189 | struct btrfs_trans_handle *trans, int mode, |
| 3190 | u64 start, u64 num_bytes, u64 min_size, |
| 3191 | loff_t actual_len, u64 *alloc_hint); |
Alexey Dobriyan | 82d339d | 2009-10-09 09:54:36 -0400 | [diff] [blame] | 3192 | extern const struct dentry_operations btrfs_dentry_operations; |
Josef Bacik | 6a3891c | 2015-03-16 17:38:52 -0400 | [diff] [blame] | 3193 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 3194 | void btrfs_test_inode_set_ops(struct inode *inode); |
| 3195 | #endif |
Christoph Hellwig | f46b5a6 | 2008-06-11 21:53:53 -0400 | [diff] [blame] | 3196 | |
| 3197 | /* ioctl.c */ |
| 3198 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
Luke Dashjr | 4c63c24 | 2015-10-29 08:22:21 +0000 | [diff] [blame] | 3199 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
David Sterba | d5131b6 | 2016-02-17 15:26:27 +0100 | [diff] [blame] | 3200 | int btrfs_ioctl_get_supported_features(void __user *arg); |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 3201 | void btrfs_update_iflags(struct inode *inode); |
| 3202 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); |
Stefan Behrens | dd5f961 | 2013-08-15 17:11:20 +0200 | [diff] [blame] | 3203 | int btrfs_is_empty_uuid(u8 *uuid); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3204 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
| 3205 | struct btrfs_ioctl_defrag_range_args *range, |
| 3206 | u64 newer_than, unsigned long max_pages); |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 3207 | void btrfs_get_block_group_info(struct list_head *groups_list, |
| 3208 | struct btrfs_ioctl_space_info *space); |
Stefan Behrens | 35a3621 | 2013-08-14 18:12:25 +0200 | [diff] [blame] | 3209 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
| 3210 | struct btrfs_ioctl_balance_args *bargs); |
Darrick J. Wong | 2b3909f | 2015-12-19 00:56:05 -0800 | [diff] [blame] | 3211 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
| 3212 | struct file *dst_file, u64 dst_loff); |
Stefan Behrens | 35a3621 | 2013-08-14 18:12:25 +0200 | [diff] [blame] | 3213 | |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3214 | /* file.c */ |
Miao Xie | 9247f31 | 2012-11-26 09:24:43 +0000 | [diff] [blame] | 3215 | int btrfs_auto_defrag_init(void); |
| 3216 | void btrfs_auto_defrag_exit(void); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3217 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
| 3218 | struct inode *inode); |
| 3219 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
Miao Xie | 26176e7 | 2012-11-26 09:26:20 +0000 | [diff] [blame] | 3220 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
Josef Bacik | 02c24a8 | 2011-07-16 20:44:56 -0400 | [diff] [blame] | 3221 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
Josef Bacik | 7014cdb | 2012-08-30 20:06:49 -0400 | [diff] [blame] | 3222 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
| 3223 | int skip_pinned); |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 3224 | extern const struct file_operations btrfs_file_operations; |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3225 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3226 | struct btrfs_root *root, struct inode *inode, |
| 3227 | struct btrfs_path *path, u64 start, u64 end, |
Filipe David Borba Manana | 1acae57 | 2014-01-07 11:42:27 +0000 | [diff] [blame] | 3228 | u64 *drop_end, int drop_cache, |
| 3229 | int replace_extent, |
| 3230 | u32 extent_item_size, |
| 3231 | int *key_inserted); |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3232 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3233 | struct btrfs_root *root, struct inode *inode, u64 start, |
Josef Bacik | 2671485 | 2012-08-29 12:24:27 -0400 | [diff] [blame] | 3234 | u64 end, int drop_cache); |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3235 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3236 | struct inode *inode, u64 start, u64 end); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3237 | int btrfs_release_file(struct inode *inode, struct file *file); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3238 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
| 3239 | size_t num_pages, loff_t pos, size_t write_bytes, |
Josef Bacik | be1a12a | 2011-04-06 13:05:22 -0400 | [diff] [blame] | 3240 | struct extent_state **cached); |
Filipe Manana | 728404d | 2014-10-10 09:43:11 +0100 | [diff] [blame] | 3241 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
Christoph Hellwig | 04b38d6 | 2015-12-03 12:59:50 +0100 | [diff] [blame] | 3242 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
| 3243 | struct file *file_out, loff_t pos_out, u64 len); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3244 | |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 3245 | /* tree-defrag.c */ |
| 3246 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3247 | struct btrfs_root *root); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 3248 | |
| 3249 | /* sysfs.c */ |
| 3250 | int btrfs_init_sysfs(void); |
| 3251 | void btrfs_exit_sysfs(void); |
Anand Jain | 96f3136 | 2015-08-14 18:32:46 +0800 | [diff] [blame] | 3252 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
Anand Jain | 6618a59 | 2015-08-14 18:32:47 +0800 | [diff] [blame] | 3253 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 3254 | |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3255 | /* xattr.c */ |
| 3256 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
Josef Bacik | 6099afe | 2008-07-24 12:16:03 -0400 | [diff] [blame] | 3257 | |
Chris Mason | edbd8d4 | 2007-12-21 16:27:24 -0500 | [diff] [blame] | 3258 | /* super.c */ |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3259 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
Qu Wenruo | 96da091 | 2016-01-19 10:23:03 +0800 | [diff] [blame] | 3260 | unsigned long new_flags); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3261 | int btrfs_sync_fs(struct super_block *sb, int wait); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3262 | |
Arnd Bergmann | 2fd57fc | 2016-09-23 18:05:21 +0200 | [diff] [blame] | 3263 | static inline __printf(2, 3) |
| 3264 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
| 3265 | { |
| 3266 | } |
| 3267 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3268 | #ifdef CONFIG_PRINTK |
| 3269 | __printf(2, 3) |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3270 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3271 | #else |
Arnd Bergmann | 2fd57fc | 2016-09-23 18:05:21 +0200 | [diff] [blame] | 3272 | #define btrfs_printk(fs_info, fmt, args...) \ |
| 3273 | btrfs_no_printk(fs_info, fmt, ##args) |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3274 | #endif |
| 3275 | |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3276 | #define btrfs_emerg(fs_info, fmt, args...) \ |
| 3277 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) |
| 3278 | #define btrfs_alert(fs_info, fmt, args...) \ |
| 3279 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) |
| 3280 | #define btrfs_crit(fs_info, fmt, args...) \ |
| 3281 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) |
| 3282 | #define btrfs_err(fs_info, fmt, args...) \ |
| 3283 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) |
| 3284 | #define btrfs_warn(fs_info, fmt, args...) \ |
| 3285 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) |
| 3286 | #define btrfs_notice(fs_info, fmt, args...) \ |
| 3287 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) |
| 3288 | #define btrfs_info(fs_info, fmt, args...) \ |
| 3289 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 3290 | |
David Sterba | 08a84e2 | 2015-10-08 08:48:52 +0200 | [diff] [blame] | 3291 | /* |
| 3292 | * Wrappers that use printk_in_rcu |
| 3293 | */ |
| 3294 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ |
| 3295 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) |
| 3296 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ |
| 3297 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) |
| 3298 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ |
| 3299 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) |
| 3300 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ |
| 3301 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) |
| 3302 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ |
| 3303 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) |
| 3304 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ |
| 3305 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) |
| 3306 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ |
| 3307 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) |
| 3308 | |
David Sterba | 24aa6b4 | 2015-10-08 10:27:02 +0200 | [diff] [blame] | 3309 | /* |
| 3310 | * Wrappers that use a ratelimited printk_in_rcu |
| 3311 | */ |
| 3312 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ |
| 3313 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) |
| 3314 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ |
| 3315 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) |
| 3316 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ |
| 3317 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) |
| 3318 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ |
| 3319 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) |
| 3320 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ |
| 3321 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) |
| 3322 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ |
| 3323 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) |
| 3324 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ |
| 3325 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) |
| 3326 | |
David Sterba | 1dd6d7c | 2015-10-08 10:51:11 +0200 | [diff] [blame] | 3327 | /* |
| 3328 | * Wrappers that use a ratelimited printk |
| 3329 | */ |
| 3330 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ |
| 3331 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) |
| 3332 | #define btrfs_alert_rl(fs_info, fmt, args...) \ |
| 3333 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) |
| 3334 | #define btrfs_crit_rl(fs_info, fmt, args...) \ |
| 3335 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) |
| 3336 | #define btrfs_err_rl(fs_info, fmt, args...) \ |
| 3337 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) |
| 3338 | #define btrfs_warn_rl(fs_info, fmt, args...) \ |
| 3339 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) |
| 3340 | #define btrfs_notice_rl(fs_info, fmt, args...) \ |
| 3341 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) |
| 3342 | #define btrfs_info_rl(fs_info, fmt, args...) \ |
| 3343 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) |
Jeff Mahoney | 897a41b | 2016-08-31 23:55:33 -0400 | [diff] [blame] | 3344 | |
| 3345 | #if defined(CONFIG_DYNAMIC_DEBUG) |
| 3346 | #define btrfs_debug(fs_info, fmt, args...) \ |
| 3347 | do { \ |
| 3348 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
| 3349 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ |
| 3350 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ |
| 3351 | } while (0) |
| 3352 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
| 3353 | do { \ |
| 3354 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
| 3355 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ |
| 3356 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ |
| 3357 | } while (0) |
| 3358 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
| 3359 | do { \ |
| 3360 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
| 3361 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ |
| 3362 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ |
| 3363 | ##args);\ |
| 3364 | } while (0) |
| 3365 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
| 3366 | do { \ |
| 3367 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
| 3368 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ |
| 3369 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ |
| 3370 | ##args); \ |
| 3371 | } while (0) |
| 3372 | #elif defined(DEBUG) |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3373 | #define btrfs_debug(fs_info, fmt, args...) \ |
| 3374 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) |
David Sterba | 08a84e2 | 2015-10-08 08:48:52 +0200 | [diff] [blame] | 3375 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
| 3376 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
David Sterba | 24aa6b4 | 2015-10-08 10:27:02 +0200 | [diff] [blame] | 3377 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
| 3378 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
David Sterba | 1dd6d7c | 2015-10-08 10:51:11 +0200 | [diff] [blame] | 3379 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
| 3380 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 3381 | #else |
| 3382 | #define btrfs_debug(fs_info, fmt, args...) \ |
Jeff Mahoney | c01f5f9 | 2016-09-21 12:17:37 -0400 | [diff] [blame] | 3383 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
David Sterba | 08a84e2 | 2015-10-08 08:48:52 +0200 | [diff] [blame] | 3384 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
Jeff Mahoney | c01f5f9 | 2016-09-21 12:17:37 -0400 | [diff] [blame] | 3385 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
David Sterba | 24aa6b4 | 2015-10-08 10:27:02 +0200 | [diff] [blame] | 3386 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
Jeff Mahoney | c01f5f9 | 2016-09-21 12:17:37 -0400 | [diff] [blame] | 3387 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
David Sterba | 1dd6d7c | 2015-10-08 10:51:11 +0200 | [diff] [blame] | 3388 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
Jeff Mahoney | c01f5f9 | 2016-09-21 12:17:37 -0400 | [diff] [blame] | 3389 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 3390 | #endif |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3391 | |
David Sterba | 08a84e2 | 2015-10-08 08:48:52 +0200 | [diff] [blame] | 3392 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
| 3393 | do { \ |
| 3394 | rcu_read_lock(); \ |
| 3395 | btrfs_printk(fs_info, fmt, ##args); \ |
| 3396 | rcu_read_unlock(); \ |
| 3397 | } while (0) |
| 3398 | |
David Sterba | 24aa6b4 | 2015-10-08 10:27:02 +0200 | [diff] [blame] | 3399 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
| 3400 | do { \ |
| 3401 | static DEFINE_RATELIMIT_STATE(_rs, \ |
| 3402 | DEFAULT_RATELIMIT_INTERVAL, \ |
| 3403 | DEFAULT_RATELIMIT_BURST); \ |
| 3404 | if (__ratelimit(&_rs)) \ |
| 3405 | btrfs_printk(fs_info, fmt, ##args); \ |
| 3406 | } while (0) |
| 3407 | |
| 3408 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ |
| 3409 | do { \ |
| 3410 | rcu_read_lock(); \ |
| 3411 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ |
| 3412 | rcu_read_unlock(); \ |
| 3413 | } while (0) |
| 3414 | |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 3415 | #ifdef CONFIG_BTRFS_ASSERT |
| 3416 | |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 3417 | __cold |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 3418 | static inline void assfail(char *expr, char *file, int line) |
| 3419 | { |
Jeff Mahoney | ab8d0fc | 2016-09-20 10:05:02 -0400 | [diff] [blame] | 3420 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 3421 | expr, file, line); |
| 3422 | BUG(); |
| 3423 | } |
| 3424 | |
| 3425 | #define ASSERT(expr) \ |
| 3426 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
| 3427 | #else |
| 3428 | #define ASSERT(expr) ((void)0) |
| 3429 | #endif |
| 3430 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3431 | __printf(5, 6) |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 3432 | __cold |
Anand Jain | 34d9700 | 2016-03-16 16:43:06 +0800 | [diff] [blame] | 3433 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
Jeff Mahoney | 4da3511 | 2012-03-01 14:57:30 +0100 | [diff] [blame] | 3434 | unsigned int line, int errno, const char *fmt, ...); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3435 | |
Jeff Mahoney | e33e17e | 2015-06-15 09:41:19 -0400 | [diff] [blame] | 3436 | const char *btrfs_decode_error(int errno); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3437 | |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 3438 | __cold |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3439 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
Jeff Mahoney | 6664283 | 2016-06-10 18:19:25 -0400 | [diff] [blame] | 3440 | const char *function, |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3441 | unsigned int line, int errno); |
| 3442 | |
Anand Jain | c5f4ccb | 2016-03-16 16:43:08 +0800 | [diff] [blame] | 3443 | /* |
| 3444 | * Call btrfs_abort_transaction as early as possible when an error condition is |
| 3445 | * detected, that way the exact line number is reported. |
| 3446 | */ |
Jeff Mahoney | 6664283 | 2016-06-10 18:19:25 -0400 | [diff] [blame] | 3447 | #define btrfs_abort_transaction(trans, errno) \ |
Anand Jain | c5f4ccb | 2016-03-16 16:43:08 +0800 | [diff] [blame] | 3448 | do { \ |
| 3449 | /* Report first abort since mount */ \ |
| 3450 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ |
Jeff Mahoney | 6664283 | 2016-06-10 18:19:25 -0400 | [diff] [blame] | 3451 | &((trans)->fs_info->fs_state))) { \ |
Chris Mason | e5d6b12 | 2016-12-09 05:56:33 -0800 | [diff] [blame] | 3452 | if ((errno) != -EIO) { \ |
| 3453 | WARN(1, KERN_DEBUG \ |
| 3454 | "BTRFS: Transaction aborted (error %d)\n", \ |
| 3455 | (errno)); \ |
| 3456 | } else { \ |
Jeff Mahoney | 71367b3 | 2017-02-15 16:28:34 -0500 | [diff] [blame] | 3457 | btrfs_debug((trans)->fs_info, \ |
| 3458 | "Transaction aborted (error %d)", \ |
Chris Mason | e5d6b12 | 2016-12-09 05:56:33 -0800 | [diff] [blame] | 3459 | (errno)); \ |
| 3460 | } \ |
Anand Jain | c5f4ccb | 2016-03-16 16:43:08 +0800 | [diff] [blame] | 3461 | } \ |
Jeff Mahoney | 6664283 | 2016-06-10 18:19:25 -0400 | [diff] [blame] | 3462 | __btrfs_abort_transaction((trans), __func__, \ |
Anand Jain | c5f4ccb | 2016-03-16 16:43:08 +0800 | [diff] [blame] | 3463 | __LINE__, (errno)); \ |
| 3464 | } while (0) |
| 3465 | |
| 3466 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ |
| 3467 | do { \ |
| 3468 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ |
| 3469 | (errno), fmt, ##args); \ |
| 3470 | } while (0) |
| 3471 | |
| 3472 | __printf(5, 6) |
| 3473 | __cold |
| 3474 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
| 3475 | unsigned int line, int errno, const char *fmt, ...); |
| 3476 | /* |
| 3477 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic |
| 3478 | * will panic(). Otherwise we BUG() here. |
| 3479 | */ |
| 3480 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
| 3481 | do { \ |
| 3482 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
| 3483 | BUG(); \ |
| 3484 | } while (0) |
| 3485 | |
| 3486 | |
| 3487 | /* compatibility and incompatibility defines */ |
| 3488 | |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 3489 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
| 3490 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 3491 | |
| 3492 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, |
| 3493 | u64 flag) |
| 3494 | { |
| 3495 | struct btrfs_super_block *disk_super; |
| 3496 | u64 features; |
| 3497 | |
| 3498 | disk_super = fs_info->super_copy; |
| 3499 | features = btrfs_super_incompat_flags(disk_super); |
| 3500 | if (!(features & flag)) { |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 3501 | spin_lock(&fs_info->super_lock); |
| 3502 | features = btrfs_super_incompat_flags(disk_super); |
| 3503 | if (!(features & flag)) { |
| 3504 | features |= flag; |
| 3505 | btrfs_set_super_incompat_flags(disk_super, features); |
Frank Holton | efe120a | 2013-12-20 11:37:06 -0500 | [diff] [blame] | 3506 | btrfs_info(fs_info, "setting %llu feature flag", |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 3507 | flag); |
| 3508 | } |
| 3509 | spin_unlock(&fs_info->super_lock); |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 3510 | } |
| 3511 | } |
| 3512 | |
Omar Sandoval | 1abfbcd | 2015-09-29 20:50:32 -0700 | [diff] [blame] | 3513 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
| 3514 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 3515 | |
| 3516 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, |
| 3517 | u64 flag) |
| 3518 | { |
| 3519 | struct btrfs_super_block *disk_super; |
| 3520 | u64 features; |
| 3521 | |
| 3522 | disk_super = fs_info->super_copy; |
| 3523 | features = btrfs_super_incompat_flags(disk_super); |
| 3524 | if (features & flag) { |
| 3525 | spin_lock(&fs_info->super_lock); |
| 3526 | features = btrfs_super_incompat_flags(disk_super); |
| 3527 | if (features & flag) { |
| 3528 | features &= ~flag; |
| 3529 | btrfs_set_super_incompat_flags(disk_super, features); |
| 3530 | btrfs_info(fs_info, "clearing %llu feature flag", |
| 3531 | flag); |
| 3532 | } |
| 3533 | spin_unlock(&fs_info->super_lock); |
| 3534 | } |
| 3535 | } |
| 3536 | |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 3537 | #define btrfs_fs_incompat(fs_info, opt) \ |
| 3538 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 3539 | |
Alexandru Moise | 9780c49 | 2015-10-18 21:35:41 +0000 | [diff] [blame] | 3540 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 3541 | { |
| 3542 | struct btrfs_super_block *disk_super; |
| 3543 | disk_super = fs_info->super_copy; |
| 3544 | return !!(btrfs_super_incompat_flags(disk_super) & flag); |
| 3545 | } |
| 3546 | |
Omar Sandoval | 1abfbcd | 2015-09-29 20:50:32 -0700 | [diff] [blame] | 3547 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
| 3548 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) |
| 3549 | |
| 3550 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, |
| 3551 | u64 flag) |
| 3552 | { |
| 3553 | struct btrfs_super_block *disk_super; |
| 3554 | u64 features; |
| 3555 | |
| 3556 | disk_super = fs_info->super_copy; |
| 3557 | features = btrfs_super_compat_ro_flags(disk_super); |
| 3558 | if (!(features & flag)) { |
| 3559 | spin_lock(&fs_info->super_lock); |
| 3560 | features = btrfs_super_compat_ro_flags(disk_super); |
| 3561 | if (!(features & flag)) { |
| 3562 | features |= flag; |
| 3563 | btrfs_set_super_compat_ro_flags(disk_super, features); |
| 3564 | btrfs_info(fs_info, "setting %llu ro feature flag", |
| 3565 | flag); |
| 3566 | } |
| 3567 | spin_unlock(&fs_info->super_lock); |
| 3568 | } |
| 3569 | } |
| 3570 | |
| 3571 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ |
| 3572 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) |
| 3573 | |
| 3574 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, |
| 3575 | u64 flag) |
| 3576 | { |
| 3577 | struct btrfs_super_block *disk_super; |
| 3578 | u64 features; |
| 3579 | |
| 3580 | disk_super = fs_info->super_copy; |
| 3581 | features = btrfs_super_compat_ro_flags(disk_super); |
| 3582 | if (features & flag) { |
| 3583 | spin_lock(&fs_info->super_lock); |
| 3584 | features = btrfs_super_compat_ro_flags(disk_super); |
| 3585 | if (features & flag) { |
| 3586 | features &= ~flag; |
| 3587 | btrfs_set_super_compat_ro_flags(disk_super, features); |
| 3588 | btrfs_info(fs_info, "clearing %llu ro feature flag", |
| 3589 | flag); |
| 3590 | } |
| 3591 | spin_unlock(&fs_info->super_lock); |
| 3592 | } |
| 3593 | } |
| 3594 | |
| 3595 | #define btrfs_fs_compat_ro(fs_info, opt) \ |
| 3596 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) |
| 3597 | |
| 3598 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) |
| 3599 | { |
| 3600 | struct btrfs_super_block *disk_super; |
| 3601 | disk_super = fs_info->super_copy; |
| 3602 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); |
| 3603 | } |
| 3604 | |
Josef Bacik | 33268ea | 2008-07-24 12:16:36 -0400 | [diff] [blame] | 3605 | /* acl.c */ |
Chris Mason | 0eda294 | 2009-10-13 13:50:18 -0400 | [diff] [blame] | 3606 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 3607 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
Christoph Hellwig | 996a710 | 2013-12-20 05:16:43 -0800 | [diff] [blame] | 3608 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 3609 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 3610 | struct inode *inode, struct inode *dir); |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 3611 | #else |
Linus Torvalds | ed8f373 | 2011-08-02 21:14:05 -1000 | [diff] [blame] | 3612 | #define btrfs_get_acl NULL |
Christoph Hellwig | 996a710 | 2013-12-20 05:16:43 -0800 | [diff] [blame] | 3613 | #define btrfs_set_acl NULL |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 3614 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 3615 | struct inode *inode, struct inode *dir) |
| 3616 | { |
| 3617 | return 0; |
| 3618 | } |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 3619 | #endif |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 3620 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3621 | /* relocation.c */ |
Jeff Mahoney | 6bccf3a | 2016-06-21 21:16:51 -0400 | [diff] [blame] | 3622 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3623 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
| 3624 | struct btrfs_root *root); |
| 3625 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, |
| 3626 | struct btrfs_root *root); |
| 3627 | int btrfs_recover_relocation(struct btrfs_root *root); |
| 3628 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
Josef Bacik | 83d4cfd | 2013-08-30 15:09:51 -0400 | [diff] [blame] | 3629 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
| 3630 | struct btrfs_root *root, struct extent_buffer *buf, |
| 3631 | struct extent_buffer *cow); |
Zhaolei | 147d256 | 2015-08-06 20:58:11 +0800 | [diff] [blame] | 3632 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
Yan, Zheng | 3fd0a55 | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 3633 | u64 *bytes_to_reserve); |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3634 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
Yan, Zheng | 3fd0a55 | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 3635 | struct btrfs_pending_snapshot *pending); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3636 | |
| 3637 | /* scrub.c */ |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 3638 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
| 3639 | u64 end, struct btrfs_scrub_progress *progress, |
Stefan Behrens | 63a212a | 2012-11-05 18:29:28 +0100 | [diff] [blame] | 3640 | int readonly, int is_dev_replace); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3641 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
| 3642 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 3643 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
| 3644 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, |
| 3645 | struct btrfs_device *dev); |
Jeff Mahoney | 2ff7e61 | 2016-06-22 18:54:24 -0400 | [diff] [blame] | 3646 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3647 | struct btrfs_scrub_progress *progress); |
| 3648 | |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 3649 | /* dev-replace.c */ |
| 3650 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); |
| 3651 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); |
Miao Xie | 4245215 | 2014-11-25 16:39:28 +0800 | [diff] [blame] | 3652 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
| 3653 | |
| 3654 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) |
| 3655 | { |
| 3656 | btrfs_bio_counter_sub(fs_info, 1); |
| 3657 | } |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 3658 | |
Arne Jansen | 7414a03 | 2011-05-23 14:33:49 +0200 | [diff] [blame] | 3659 | /* reada.c */ |
| 3660 | struct reada_control { |
Jeff Mahoney | c28f158 | 2016-06-22 18:56:44 -0400 | [diff] [blame] | 3661 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
Arne Jansen | 7414a03 | 2011-05-23 14:33:49 +0200 | [diff] [blame] | 3662 | struct btrfs_key key_start; |
| 3663 | struct btrfs_key key_end; /* exclusive */ |
| 3664 | atomic_t elems; |
| 3665 | struct kref refcnt; |
| 3666 | wait_queue_head_t wait; |
| 3667 | }; |
| 3668 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, |
| 3669 | struct btrfs_key *start, struct btrfs_key *end); |
| 3670 | int btrfs_reada_wait(void *handle); |
| 3671 | void btrfs_reada_detach(void *handle); |
Zhao Lei | 02873e4 | 2015-12-31 22:46:45 +0800 | [diff] [blame] | 3672 | int btree_readahead_hook(struct btrfs_fs_info *fs_info, |
David Sterba | fc2e901 | 2016-11-08 13:50:03 +0100 | [diff] [blame] | 3673 | struct extent_buffer *eb, int err); |
Arne Jansen | 7414a03 | 2011-05-23 14:33:49 +0200 | [diff] [blame] | 3674 | |
Jan Schmidt | 95a0607 | 2012-05-29 17:06:54 +0200 | [diff] [blame] | 3675 | static inline int is_fstree(u64 rootid) |
| 3676 | { |
| 3677 | if (rootid == BTRFS_FS_TREE_OBJECTID || |
Qu Wenruo | e09fe2d | 2015-02-27 16:24:23 +0800 | [diff] [blame] | 3678 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
| 3679 | !btrfs_qgroup_level(rootid))) |
Jan Schmidt | 95a0607 | 2012-05-29 17:06:54 +0200 | [diff] [blame] | 3680 | return 1; |
| 3681 | return 0; |
| 3682 | } |
David Sterba | 210549e | 2013-02-09 23:38:06 +0000 | [diff] [blame] | 3683 | |
| 3684 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) |
| 3685 | { |
| 3686 | return signal_pending(current); |
| 3687 | } |
| 3688 | |
Josef Bacik | aaedb55 | 2013-10-11 14:44:09 -0400 | [diff] [blame] | 3689 | /* Sanity test specific functions */ |
| 3690 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 3691 | void btrfs_test_destroy_inode(struct inode *inode); |
| 3692 | #endif |
David Sterba | 210549e | 2013-02-09 23:38:06 +0000 | [diff] [blame] | 3693 | |
Jeff Mahoney | f5ee5c9 | 2016-06-21 09:52:41 -0400 | [diff] [blame] | 3694 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
David Sterba | fccb84c | 2014-09-29 23:53:21 +0200 | [diff] [blame] | 3695 | { |
| 3696 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
Jeff Mahoney | f5ee5c9 | 2016-06-21 09:52:41 -0400 | [diff] [blame] | 3697 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
| 3698 | &fs_info->fs_state))) |
David Sterba | fccb84c | 2014-09-29 23:53:21 +0200 | [diff] [blame] | 3699 | return 1; |
| 3700 | #endif |
| 3701 | return 0; |
| 3702 | } |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 3703 | #endif |